(informal) You're doing what?
Tu fais quoi?
what (direct object in a question) - quoi. This is an informal construction frequently used instead of its more formal equivalent: Que fais-tu?
I understand what she is doing
Je comprends ce qu'elle fait
what (as the direct object in a sentence) - ce que. Note how ce que becomes ce qu' when followed by a vowel sound.
You sing, which is funny
Tu chantes, ce qui est drôle
which (as a pronoun) - ce qui
Which middle school?
which/what - quel. When "what" precedes a noun, the correct translation is always quel. If the noun is feminine, use quelle.
Who am I?
who - qui. Note that the common interrogative form is: interrogative word + verb-pronoun.
When can she go?
Quand peut-elle aller?
when - quand
Why do you study?
why - pourquoi
I am eating because I am hungry
Je mange parce que j'ai faim
because - parce que
Where is my book?
Où est mon livre?
where - où. Note that the verb remains conjugated in the third-person singular form to match the direct object, "book."
How are you?
how - comment. Comment vas-tu? literally translates as "How are you going?" instead of the English phrasing "How are you?" Alternatively, you can say Comment ça va?
How much money do you have?
Combien d'argent as-tu?
how much, how many - combien. Note that there is no difference in French between the questions "How much?" and "How many?"
What is a convertible?
Qu'est-ce qu'un cabriolet?
What is a... - Qu'est-ce qu'un/une...
What does "snack" mean?
Que veut dire "encas"?
What does ___ mean? - Que veut dire ___?
What do you think about the dinner?
Que penses-tu du dîner?
to have an opinion about, to think about - penser de. Recall that penser à means "to think about (someone, something)." Penser de, on the other hand, means "to have an opinion about" someone or something.
Why is the dinner so important?
Pourquoi le dîner est-il tellement important?
so, so much - tellement. This adverb can also mean "to such a degree" or "in such a manner." An alternative is si: Pourquoi le dîner est-il si important?
Here is a good example
Voici un bon exemple
here is, this is - voici. Exemple is a masculine noun. Note that you would still use Voici even if the sentence began "Here are..."
There is my car
Voilà ma voiture
here is, there is - voilà. Note how in this case voilà functions as a presentative.
That is why I can't cook
Voilà pourquoi je ne peux pas cuisiner
that is why - voilà. This word is difficult to translate directly into English, as it has many different uses.
The whole house is beautiful
Toute la maison est belle
the whole, all of, every - tout + definite article. Note the feminine form of tout, toute. Here you are essentially saying "All of the house is beautiful." The plural toutes les maisons would mean "all of the houses" or "every house."
All of the trains are long
Tous les trains sont longs
the whole, all of, every (plural) - tous + definite article. Note that the feminine form of tous is toutes.
He is eating each snack
Il mange chaque encas
each, every - chaque. The indefinite adjective chaque always takes a singular noun and/or the third-person singular verb form: Chaque train est long.
All right (then)!
all right - d'accord. Note that d'accord is only used as an affirmation (to agree with someone), never as a description (to say something is "all right"). "To agree" or "to be in agreement" is expressed with the construction être d'accord.
They are perfect together
Ils sont parfaits ensemble
together - ensemble. Note that ensemble is an invariable adverb.
I study for school
J'étudie pour l'école
for - pour. Note that pour can also be used to mean "to" or "in order to."
I eat in order to live
Je mange afin de vivre
in order to, so (as to) - afin de. This expression is usually followed by an infinitive. As an alternative, you could use pour.
We're together; I'm glad
Nous sommes ensemble; je suis content
pleased, glad - content. Note that content usually refers to a momentary state (often due to a specific reason) instead of a general state of happiness.
Anyway, we're coming home
D'ailleurs, on rentre à la maison
anyway, incidentally - d'ailleurs
Do you have another boat?
As-tu un autre bateau?
other, another, different - autre. The plural form is d'autres: d'autres enfants means "other kids." Autre can also be used as a noun: les autres means "the others."
The two boys are very different
Les deux garçons sont très différents
different - différent
He wants a different house
Il veut une autre maison
other, another, different - autre. Note how in this case autre is used, not différent. Here you are essentially saying "He wants another house." Meanwhile, "The house is different" would be translated as La maison est différente.