Can someone help me correct these? -J'ai étudié la philosophie depuis 15 ans -Il y a beaucoup des chats et l’oiseaux?

😉 Bonjour, Hello

As a native French, I say it like that:

With the tense you used: past tense, it's:

_ J'ai étudié la philosophie pendant 15 ans.

_ Il y a beaucoup de chats et *d'oiseaux.

* The vowel ' e ' is elided in the words that have a single syllable, like: de, ne, me, te, se, le, que and before a vowel.

Des oiseaux = SOME birds too, so you cannot put ' les '.

~~ Have a nice day ~~

Cat. •That's all

J'étudie la philosophie depuis 15 ans. (I have been studying philosophy for 15 years. In French, you use the present tense, and "depuis" indicates it started in the past and continues to the present).

Il y a beaucoup de chats et d'oiseaux. (des, changes to de, after adverbs of quantity - normally. The beaucoup applies to both nouns, and so DE must go in front of oiseaux as well, and it must contract.)