As we mentioned in our last lesson, a direct object is a noun that receives the action of a verb (such as "the ball" in "I throw the ball"). On the other hand, an indirect object indicates to whom or for whom the action is done (such as "my friend" in "I throw the ball to my friend"). Just as direct object pronouns replace direct objects (e.g. "I throw it to my friend"), indirect object pronouns replace indirect objects ("I throw the ball to him/her"). There are six indirect object pronouns in French:
me (to me) nous (to us)
te (to you) vous (to you)
lui (to him/her) leur (to them)
In French, an indirect object pronoun usually replaces "à (to) + a person." Unlike direct object pronouns, which can refer to either people or things, indirect object pronouns only refer to people.
Je jette le ballon à mon amie. / Je lui jette le ballon.
I throw the ball to my friend. / I throw her the ball [or "I throw the ball to her"].
The following example contains a mixture of direct and indirect pronouns. How did the speaker know when to use which?
Il m'a dit: "Je le garde". Ben, je lui ai dit: "Écoutez, expliquez aux quatre cents personnes...”
He told me, "I'm keeping it." Well, I told him, "Listen, explain to the four hundred people...”
Cap. 24, Actu Vingtième: Vendanges parisiennes
It all depends on whether the verb in question would normally be followed by the preposition à. Garder isn't followed by à: you would say garder quelque chose (to keep something), but never garder à quelque chose. If you watch the video, you'll know from context that the speaker is referring to le fromage (cheese). So instead of saying je garde le fromage, he uses the direct object pronoun le (je le garde). On the other hand, you would say dire à quelqu'un (to tell someone), but never dire quelqu'un. Because of that à, the speaker knows to use the indirect objects me and lui.
Here are some other examples of indirect object pronouns in action:
Si la nuit me parle de souvenirs passés
If the night speaks to me about past memories
Cap. 3-4, Boulbar: New York, 6 heures du matin
Mais je te donne plus que des mots
But I give you more than words
Cap. 12, Corneille: Comme un fils
Et là, je leur ai envoyé une petite nouvelle…
And here, I sent them a little short story…
Cap. 86, Claudine Thibout Pivert: 2ème Salon du livre et des vieux papiers Mazamet
We know these are indirect object pronouns because they all replace "à + person" in the verbal expressions parler à quelqu'un (to speak to someone), donner à quelqu'un (to give to someone), and envoyer à quelqu'un (to send to someone).
As you learned in our last lesson, when a direct object pronoun is followed by a verb in the past tense (passé composé), the past participle needs to agree in number and gender with the direct object pronoun. On the other hand, you don't have to worry about agreement in the passé composé with indirect object pronouns. That's why you have je leur ai envoyé in the example above and not je leur ai envoyés or je leur ai envoyées.
A direct object is a noun that receives the action of a verb, such as the word "cookie" in the sentence, "I'm eating the cookie." It generally answers the question "what?" or "whom?" ("What am I eating? The cookie.") A direct object pronoun replaces the direct object when the latter is already implied. So instead of "I'm eating the cookie," you could just say, "I'm eating it."
The French direct object pronouns are:
me (me) nous (us)
te (you) vous (you)
le (him, it) les (them, masculine and feminine)
la (her, it)
Direct object pronouns have the same function in French as they do in English, with a few important distinctions. The most notable of these is that whereas in English the direct object always comes after the verb, in French it always comes before (except in the imperative, as we discussed in a previous lesson):
Ce livre me fascine.
This book fascinates me.
Quand un copain t'appelle pour son déménagement
When a friend calls you to help him with his move
Cap. 4, Oldelaf: La Tristitude
The third-person singular direct object pronouns (le and la) have the same gender as the noun they refer to:
Le silence tue la souffrance, l'émoi
Silence kills suffering, the struggle
L'entends-tu, est-ce que tu le vois?
Do you hear it, do you see it?
Cap. 21-22, Indila: S.O.S.
La tarte à l'oignon! -Ouais, comment vous la faites? -Je la fais pas, je l'achète.
Onion tart! -Yeah, how do you make it? -I don't make it, I buy it.
Cap. 17, Actu Vingtième: Foire aux oignons
In the first example, the le of le vois refers to le silence. In the second, the la of la faites/la fais refers to la tarte à l'oignon. Both examples demonstrate another rule that applies to all singular direct object pronouns (me, te, le, and la): when the verb that comes after the pronoun begins with a vowel or silent h, the e or a of the pronoun is dropped and is replaced with an apostrophe (this is known as elision). That's why you have l'achète instead of la achète, l'entends instead of le entends, and t'appelle instead of te appelle.
Again, this only applies to singular direct object pronouns. With the plural pronouns, all you have to think about is number agreement. In the following examples, les refers to both the masculine plural ils and the feminine plural les pommes, and it doesn't change before a verb beginning with a vowel:
À l'assemblée, ils ont reçu un prix qui les touche mais les concerne peu…
At the assembly, they received a prize that touches them but concerns them little…
Cap. 25, Le Journal: Nouveaux artistes pluriculturels
Est-ce que tu aimes les pommes? -Non, je ne les aime pas.
Do you like apples? -No, I don't like them.
The only other tricky aspect of French direct object pronouns occurs in the past tense (passé composé). If you have a feminine singular, feminine plural, or masculine plural direct object pronoun before a verb in the passé composé, you need to make sure that the past participle agrees in number and gender with the noun you're referring to:
Je n'ai pas les jouets. Je les ai oubliés.
I don't have the toys. I forgot them.
Mais si toutes ces technologies existent depuis si longtemps, pourquoi est-ce qu'on ne les a pas utilisées?
But if all these technologies have existed for so long, why haven't we used them?
Cap. 3-4, Il était une fois - Notre Terre: 25. Technologies - Part 6
The root (masculine singular) forms of the above past participles are oublié and utilisé. But since jouets is masculine plural, we need to add an s to oublié to make it plural (oubliés). And since technologies is feminine plural, we need to add an e to utilisé to make it feminine and an s to make it plural (utilisées).
Stay tuned for part two of this series, which will focus on indirect object pronouns. À bientôt!
In our last lesson, we introduced the French imperative mood, which is used to express a command or a request. We concluded the lesson with a discussion of reflexive verbs, which become hyphenated in the imperative: for example, se souvenir (to remember) becomes souviens-toi! (remember!). In fact, any imperative verb followed by an object pronoun requires a hyphen:
Ouais, donne-moi l'info.
Yeah, give me the info.
Cap. 45, Plus belle la vie: Episode 2771 - Part 7
An imperative verb can even precede two object pronouns (and therefore two hyphens). For example, we could shorten the above sentence to:
Yeah, give it to me.
Let's break that down: donne is the imperative verb (give), la is the direct object pronoun ("it," referring to "the info"), and moi is the indirect object pronoun (to me). Note that in imperative expressions like this, the direct object pronoun always comes before the indirect object pronoun. You can learn more about French object pronouns here.
On the other hand, when you negate an imperative verb with object pronouns, the hyphens disappear and the pronouns move before the verb:
Ne te souviens pas.
Ne me la donne pas.
Don't give it to me.
Though we mentioned in our previous lesson that the imperative is nearly identical to the present indicative form of a verb, there are four very common verbs for which this is not the case: avoir (to have), être (to be), savoir (to know), and vouloir (to want). For these verbs, the imperative is nearly identical to their present subjunctive forms:
Mon ami, n’aie pas peur
My friend, don’t be afraid
Cap. 18, Arthur H et M: Est-ce que tu m’aimes?
Mais soyons prudents!
But let's be careful!
Cap. 17, Il était une fois - les Explorateurs: 10. Amerigo Vespucci - Part 4
Sachez qu'il y a de nombreux trains directs de Paris vers Trouville, Deauville.
Know that there are numerous trains direct from Paris toward Trouville, Deauville.
Cap. 35, Voyage en France: La Normandie - Cabourg
The imperative form of vouloir is mostly used in the second-person plural (veuillez) as a formal way of saying "please":
Veuillez ne pas quitter. Vous allez être mise en relation avec notre secrétariat.
Please stay on the line. You will be connected to our secretary's office.
Cap. 5, Manon et Clémentine: Rendez-vous chez le médecin
That about covers it for the imperative! Don't forget (n'oubliez pas) to check out our new videos this week and don't hesitate (n'hésitez pas) to tweet us @yabla or send your topic suggestions to email@example.com.
In our last lesson, we introduced the general rule for conjugating French verbs in the present subjunctive: take the third-person plural (ils/elles) present indicative form of the verb, remove the -ent, and add the subjunctive endings: -e, -es, -e, -ions, -iez, and -ent.While this rule applies to the vast majority of verbs, some of the most common French verbs have irregular subjunctive conjugations.
In this video about a tile factory in Courboissy, we find two irregular subjunctive verbs in the same caption, both introduced by the phrase pour que (in order that, so that):
Alors soit pour que ça soit respirant, pour que vous ayez une maison respirante…
So either in order for it to be breathable, so that you have a breathable house…
Cap. 36, Salon Eco Habitat: Terres cuites de Courboissy
The first verb is être (to be), which is conjugated as follows in the subjunctive: je sois, tu sois, il/elle/on soit, nous soyons, vous soyez, ils/elles soient. Note that the first soit in the above caption is not the same as the third-person subjunctive form of être—it's a separate word meaning "either." See our lesson Either/Or for more information on that.
The second verb, avoir (to have), looks like this in the subjunctive: j'aie, tu aies, il/elle/on ait, nous ayons, vous ayez, ils/elles aient.
Like the first-person subjunctive forms of avoir, those of aller (to go) also begin withai-: j'aille, tu ailles, il/elle/on aille.
Si vous voulez que je m'en aille
If you want me to go away
Cap. 17, Bertrand Pierre: Si vous n’avez rien à me dire
But in the nous and vous forms, the i changes position: nous allions, vous alliez. Then it goes back to where it was for the third-person plural: ils/elles aillent.
Most forms of vouloir (to want) contain the letters euille: je veuille, tu veuilles, il/elle/on veuille, ils/elles veuillent.
…il n'y a rien d'autre à faire qu'à attendre que le vent veuille bien se lever.
…there's nothing else to do but wait until the wind finally decides to pick up.
Cap. 15-16, Il était une fois - les Explorateurs: 10. Amerigo Vespucci - Part 1
But its nous and vous forms look a little different: nous voulions, vous vouliez.
Faire (to make or to do) and pouvoir (to be able to) both have a double s in the subjunctive:
Maintenant qu'on est en numéro trois, il faut qu'on fasse quatre, cinq, six.
Now that we are on step three, we have to do four, five, six.
Cap. 34, B-Girl Frak: Le “6-Step”
Et maintenant pose ton assiette en or devant moi pour que je puisse manger son contenu.
And now set your gold plate before me so that I can eat its contents.
Cap. 4-5, Contes de fées: Le roi grenouille - Part 2
The full subjunctive conjugations of these verbs are:
je fasse, tu fasses, il/elle/on fasse, nous fassions, vous fassiez, ils/elles fassent
je puisse, tu puisses, il/elle/on puisse, nous puissions, vous puissiez, ils/elles puissent
Finally, there's savoir (to know), which has a ch in the subjunctive: je sache, tu saches, il/elle/on sache, nous sachions, vous sachiez, ils/elles sachent.
Comment tu veux que je le sache moi?
How do you want [expect] me to know?
Cap. 26, Plus belle la vie: Episode 2771 - Part 2
Congrats! You're now fully capable of conjugating any French verb in the present subjunctive. Feel free to send us any suggestions for future lesson topics by tweeting us @yabla or emailing us at firstname.lastname@example.org.
In this lesson, we'll be tackling the subjunctive, a verbal mood that expresses a wide range of situations, such as a wish, an obligation, a possibility, a doubt, or an emotion. Whereas the indicative mood simply describes something that happens, the subjunctive mood describes something that may happen, something you want to happen, something you're afraid will happen, and other hypothetical situations. It's the difference between the phrases "you are here" and "I wish you were here."
The general rule for forming the subjunctive in French is to take the third-person plural (ils/elles) present indicative form of the verb, remove the -ent, and add the subjunctive endings: -e, -es, -e, -ions, -iez, and -ent. Take a look at this handy chart for a concise summary of the conjugation of regular subjunctive verbs. We'll go over irregular subjunctive conjugations in another lesson.
Let's take the verbs dire (to say) and réfléchir (to think about) as examples. To conjugate them in the first-person singular subjunctive, we would go to the third-person present plural indicative (disent and réfléchissent), drop the -ent, and add the first-person singular subjunctive ending -e. The results are dise and réfléchisse:
Qu’est-ce que tu veux que je te dise?
What do you want me to tell you?
Cap. 32, Plus belle la vie: Episode 2771 - Part 2
Avec tout ce choix, il faut que je réfléchisse.
With all these choices, I have to think about it.
Cap. 10, Il était une fois… L’Espace: 3. La planète verte - Part 3
Besides the conjugation, the most important aspect of the French subjunctive is that it almost always follows the word que (that), as in the expressions tu veux que and il faut que above. Vouloir que (to want) and il faut que (it is necessary that) are among the large number of French expressions that require the subjunctive. You can find a detailed list of these expressions here.
The subjunctive is used to express some of the most basic emotions, such as happiness and sadness:
On est vraiment très heureux que nos huit jeunes puissent partir.
We are truly very happy that our eight young people are able to go.
Cap. 8, Télé Lyon Métropole: Sport dans la ville & Afrique du Sud
Je suis triste que mon ami ne vienne pas au concert avec nous.
I'm sad that my friend isn't coming to the concert with us.
It's also used in a number of conjunctive phrases such as pourvu que (as long as), bien que (even though), and avant que (before):
Tu pourras leur parler de ce que tu voudras, pourvu que tu parles au moins deux heures.
You'll be able to talk to them about whatever you like, as long as you speak for at least two hours.
Cap. 3-4, Il était une fois... L'Espace: 6. La révolte des robots - Part 5
J'aime le karaoké bien que je ne chante pas très bien.
I love karaoke even though I don't sing very well.
...avant que leurs enseignements ne soient exploités par l'industrie.
...before their lessons are exploited by industry.
Cap. 21, Le Journal: 2000 mètres sous les mers
As the above example demonstrates, some subjunctive constructions (like avant que) require a ne without a pas (known as a ne explétif) before the verb. See our previous lesson for an in-depth look at this special use of ne.
Some phrases, such as penser que (to think that), only take the subjunctive in the negative:
Je ne pense pas que ça serve à grand-chose, ce que tu comptes faire.
I don't think it's going to help much, what you're planning to do.
Cap. 29, Plus belle la vie: 2772 - Part 3
If we make that sentence affirmative, we'll need to change servir from the subjunctive to the indicative:
Je pense que ça sert à beaucoup de choses, ce que tu comptes faire.
I think it's going to help a lot, what you're planning to do.
To sum up, the subjunctive is used after a vast number of expressions that convey a wide variety of subjective and hypothetical states. This multitude of usages makes learning the subjunctive no easy feat, but the fact that the subjunctive almost always follows the word que makes it a little less daunting. So if there's one thing you should take away from this lesson, it's that whenever you see a verb after the word que, there's a good chance it should be in the subjunctive!
Il y a is probably one of the most common French expressions, and appears countless times in Yabla videos, which makes it a perfect lesson topic! Though it literally means "it has there," il y a is the equivalent of "there is" or "there are." You'll find it very useful when describing a location or a situation:
Donc, en effet, il y a des vagues, il y a du courant. Le courant est fort.
So, indeed, there are waves, there is a current. The current is strong.
Cap. 2, À la plage avec Lionel: La plage
As the above example demonstrates, il y a remains unchanged regardless of whether its object is singular (du courant) or plural (des vagues). It does change, however, according to the tense of the sentence. Here it is in the imperfect, passé composé, and future tenses:
Il y avait un lièvre mais, tu vois, il courait trop vite.
There was a hare, but you see, it was running too fast.
Cap. 14, Il était une fois - Les Amériques: 1. Les premiers Américains - Part 7
Quand il est mort, il y a eu un million de Parisiens qui ont suivi le cortège.
When he died, there were a million Parisians following the procession.
Cap. 15, Bertrand Pierre: Victor Hugo
Il y aura beaucoup de tableaux à voir au musée.
There will be many paintings to see at the museum.
Il y a can also be used to indicate the passage of time, in which case it usually means "ago":
On a commencé il y a dix minutes.
We started ten minutes ago.
Cap. 47, Actus de quartier: Fête de quartier Python-Duvernois - Part 3
You can also use the phrase il y a... que to express the same thing, though in this case it usually means "for" or "since":
Il y a trois mois que j'habite à Paris.
I've lived in Paris for three months.
Incidentally, you could rewrite the above sentence three different ways, all with the same meaning:
Ça fait trois mois que j'habite à Paris.
Voilà trois mois que j'habite à Paris.
J'habite à Paris depuis trois mois.
Another more informal way of using il y a is when you notice someone looking sad or upset and you ask them: Qu'est-ce qu'il y a? (What's wrong?) Even more informally, you can shorten that question to: Qu'y a-t-il? If you're wondering why there's suddenly a "t" and two hyphens there, check out our lesson on inversion for a full explanation.
It's very common for il y a to be shortened to y a in casual speech:
C'est festif, euh... Y a de la barbe à papa.
It's festive, uh... There's cotton candy.
Cap. 32, Actus de Quartier: Fête de la rose au caviar rouge
To sum up, let's review all the uses of il y a in a short dialogue:
Qu'est-ce qu'il y a? -Je suis en colère parce qu'il y a trop de tableaux au musée du Louvre. Il y a trois mois que j'habite à Paris et je n'ai pas encore tout vu!
What's wrong? -I'm mad because there are too many paintings in the Louvre. I've lived in Paris for three months and I still haven't seen everything!
Imagine your friend is trying to decide on a shirt to wear to a party and asks for your opinion. In French, there are two main forms that question could take:
Quelle chemise préfères-tu?
Which shirt do you prefer?
Laquelle de ces chemises préfères-tu?
Which of these shirts do you prefer?
There's a slight but important difference between these two questions. Though quelle and laquelle both mean "which," laquelle more specifically means "which one." Since laquelle is a pronoun, you can simplify the second sentence and just say, Laquelle préfères-tu? (Which one do you prefer?) However, you can't simplify the first one (Quelle préfères-tu?) because quelle is an adjective and therefore always precedes a noun.
Note that quelle and laquelle agree in number (singular) and gender (feminine) with the noun they refer to, chemise. Their other forms are quel/lequel (masculine singular), quels/lesquels (masculine plural), and quelles/lesquelles (feminine plural). As you can see, the pronoun is formed by combining the definite article le, la, or les with the corresponding form of quel.
Besides introducing a question, lequel/laquelle/lesquels/lesquelles can also be used after a preposition. Here they are in action with the prepositions sur (on) and dans (in):
Le territoire sur lequel ils sont installés…
The territory on which they have settled…
Cap. 40, Actus de Quartier: Fête de quartier Python-Duvernois - Part 4
Par exemple, j'ai ma deuxième robe, dans laquelle je chante mon duo.
For example, I have my second dress, in which I sing my duet.
Cap. 25, Melissa Mars: Mozart, L'opéra rock - Part 1
Watch out for the prepositions à (to) and de (of, from) in this construction. Just as à + le becomes au instead of à le, and de + le becomes du instead of de le, à + lequel and de + lequel become auquel (to which) and duquel (from which, of which, about which). In all forms except the feminine singular (à laquelle, de laquelle), à and de combine with the pronoun to form one word:
Masculine singular: duquel (de + lequel), auquel (à + lequel)
Masculine plural: desquels (de + lesquels), auxquels (à + lesquels)
Feminine plural: desquelles (de + lesquelles), auxquelles (à + lesquelles)
An important note about duquel/de laquelle/desquels/desquelles: these constructions are often replaced by the word dont, the subject of our previous lesson. So instead of a sentence like:
Voici le livre duquel je t'ai parlé hier.
Here is the book about which I spoke to you yesterday.
You would more often hear:
Voici le livre dont je t'ai parlé hier.
Here is the book I spoke to you about yesterday.
However, you have to use duquel, de laquelle, etc., whenever the de is part of a prepositional phrase such as près de (near), à côté de (next to), or loin de (far from):
Il est bordé des quais de Valmy et de Jemmapes au bord duquel se trouve le fameux Hôtel du Nord.
It is bordered by the Quais de Valmy and Jemmapes, along which is found the famous Hôtel du Nord.
Cap. 32-33, De nouvelles découvertes avec Marion: Le canal Saint-Martin
Another important note: Though it's common in English to end a clause with a preposition like "about" or "from," you can never do this with de, duquel/de laquelle, etc., or dont. For example, you can say "the book I spoke to you about," but you can never say le livre je t'ai parlé duquel or le livre je t'ai parlé dont. You can only say le livre duquel je t'ai parlé or le livre dont je t'ai parlé (the book about which I spoke to you).
Thanks for reading! Tweet us @yabla or email us at email@example.com with any questions, feedback, or suggestions for future lesson topics.
In our last lesson, we introduced the word dont, a relative pronoun with a wide variety of uses. Let's start with the two most straightforward meanings of dont: "whose" and "including":
...un riche marchand dont la fille préférée s'appelait Belle.
...a rich merchant whose favorite daughter was called Belle.
Cap. 2, Bande-annonce: La Belle et la Bête
Et grâce à lui, j'ai rencontré beaucoup de gens très intéressants, dont Gilles Proulx.
And thanks to him, I met lots of very interesting people, including Gilles Proulx.
Cap. 29, Le Québec parle aux Français - Part 2
It's usually pretty easy to distinguish these two uses of dont from context, but punctuation also provides a clue: dont is usually preceded by a comma when it means "including," but not when it means "whose."
Now let's get into the grammar behind dont. Like all relative pronouns, dont refers back to an element in the main clause (un riche marchand and gens très intéressants in the examples above). But in many cases, dont more specifically refers to the preposition de + a noun. To see how this plays out, let's look at how dont can be used to combine two sentences into one:
J'ai un chat. Le poil de mon chat est très doux.
I have a cat. My cat's fur is very soft.
J'ai un chat dont le poil est très doux.
I have a cat whose fur is very soft.
As you can see, dont stands in for de and refers back to chat. It also prevents the redundancy of saying chat twice.
Dont often replaces the de used in fixed expressions, such as être fier/fière de (to be proud of), parler de (to talk about), and avoir besoin de (to need):
Et puis il y a une chose dont Michel est particulièrement fier.
And then there is one thing that Michel is particularly proud of.
Cap. 35, Le Journal: L'île de Pâques
...dans la ville de Dongtan en Chine, dont nous avons déjà parlé.
...in the city of Dongtan in China, about which we've already spoken.
Cap. 17, Il était une fois... Notre Terre: 25. Technologies - Part 8
Voici le livre dont j'ai besoin.
Here is the book that I need.
We could rewrite all of these examples using de:
Et puis Michel est particulièrement fier d'une chose.
And then Michel is particularly proud of one thing.
Nous avons déjà parlé de la ville de Dongtan en Chine.
We've already spoken about the city of Dongtan in China.
J'ai besoin de ce livre-ci.
I need this book.
That about covers it for dont! Though the scope of its applications can be a little daunting, it's a very useful and succinct word that will make your French sound very sophisticated. Don't neglect to use dont whenever you can!
In our last lesson, we introduced the French demonstrative pronouns (celui, celle, ceux, celles), which combine with the suffixes ci (here) and là (there) to form expressions such as "this one," "that one," "these," and "those." In this lesson, we'll explore two other useful constructions featuring these pronouns.
The first is celui/celle/ceux/celles + de + noun, which is used to indicate ownership or possession. Here's a straightforward example from the Beauty and the Beast trailer:
Je suis venue échanger ma vie contre celle de mon père.
I've come to exchange my life for that of my father.
Cap. 23, Bande-annonce: La Belle et La Bête
"That of my father" is the literal translation of celle de mon père, but the sentence could also have been translated as, "I've come to exchange my life for my father's." As we mentioned in the last lesson, the demonstrative pronoun has to agree in gender and number with the word it's referring to. In this case, the feminine singular celle refers to the feminine singular noun vie.
The second construction is celui/celle/ceux/celles + qui, que, or dont. Qui (that, who) and que (that, whom) are relative pronouns, or words that introduce a dependent clause. While qui acts as the subject of the clause (usually followed by a verb), que acts as the object (usually followed by a noun or pronoun). With a demonstrative pronoun in front of them, they create expressions like "the one(s) that/who" (demonstrative pronoun + qui) and "the one(s) that/whom" (demonstrative pronoun + que):
Vous savez... celui qui se trouve derrière la maison voisine.
You know... the one that's behind the house next door.
Cap. 20, Il était une fois: Notre Terre - 9. Les écosystèmes - Part 4
...dans des situations un peu meilleures que celles qu'ils avaient en arrivant.
...in situations that are a little bit better than the ones that they had when they arrived.
Cap. 24, Le Journal: Les Restos du Cœur
Cet homme n'est pas celui que j'ai vu hier.
That man is not the one whom I saw yesterday.
Dont is another relative pronoun that means "whose" or "of which":
J'habite une maison dont les volets sont bleus.
I live in a house whose shutters are blue.
The demonstrative pronoun + dont combination means "the one(s) whose" or "the one(s) of/about which." In this combination, dont often replaces an object preceded by de:
Tu parles de ma chemise rouge? -Non, celle dont je parle est bleue.
Are you talking about my red shirt? -No, the one that I'm talking about is blue.
So, to review, the three major constructions featuring demonstrative pronouns are:
-demonstrative pronoun + -ci or -là (celui-ci, celle-là, etc.)
-demonstrative pronoun + de + noun (celle de mon père)
-demonstrative pronoun + qui, que, or dont (celui que j'ai vu hier)
The two big takeaways here are that demonstrative pronouns always replace a previously mentioned noun (and must agree with it in gender and number) and are always accompanied by another word, whether the suffixes ci and là, the preposition de, or the relative pronouns qui, que, and dont.