French grammar problem: please advise! I'm a beginner and hate eating grammar books. . .

How to distinguish 1.y from en? For example, everyone can be an adjective, but how to use it? For example, madam, what do you think of ecological problems?

Answer: To put it simply, the auxiliary pronoun y generally replaces the locative adverbial guided by prepositions such as à, dans and sur. The preposition leads nouns as indirect objects, generally referring to things, and nouns lead adjectives as complements.

The basic usage of en is to replace "de+noun" and put it in front of related verbs. There are five specific situations. You can refer to your grammar book about this.

What is an "intruder" ... interested in your example? Y replaces aux problèmes écologiques as an indirect object, so en is not used.

2. Is it possible to use both the second personal pronoun and the personal pronoun in the sentence? For example:

Do you know astrology? -No, I'm not Crosspass. Can I use le here?

A: Generally speaking, there is no case where both the second personal pronoun and the personal pronoun can be used in a sentence. However, there are several special words. . . If there is a person behind it, you can't use y instead of the object, you can only use the stressed personal pronoun.

"Can you astrology? -No, I'm not Crosspass. Can I use le here? "No, well, as a direct object, neither personal pronouns nor neutral pronouns can be used in this sentence. The phrase croire à believes. . . Astrology is a noun divination, so personal pronouns are not used.

3. Faith and concern. Why use y?

Answer: Again, concentrate. ....

You are right, we are not together. Why use eux and nous here instead of les and nous?

Answer: here are the stressed personal pronouns eux and nous as appositives, so we don't use direct objects les and nous