passive

It seems you are talking about normal procedure, so is released is correct in both clauses. If you are talking about a single situation in the past, was released is correct in both clauses.

Clear explanation. Thanks!

I think that you need to use past perfect passive."The trailer of the movie had been released before the the original movie was released".

I want the first clause in present tense.

You can't use present tense because your sentence contains two verbs, and one of them happened before the other one, so you need to use past perfect to express both of them in one sentence .

The cat jumps before he comes in the room.

And

The cat jumps before he had come in the room.

Both are correct. Here what I wanna say is sometimes I need to compare two present incident. And then I can use two verbs in present tense. Because both works are happening at the present.

I don't know what you mean.
Look! Iam a first-year english student, and I have been learning english grammer since 2 months. We learned in the course that if you want to express two actions both of them happened in the past, but one of them happened before the other you need to use past perfect, and also you can express both of them in past simple tense.

sft MThe cat jumps before he comes in the room. And The cat jumps before he had come in the room. Both are correct.

The second is not correct.

Thank you for noticing this. I think the correct form of the second sentence will be-

The cat had jumped before he came in the room.