大家好！……怎么用美语聊希望？

give up hope 放弃希望

I don't think my crush in math class will ever want to go out on a date with me.

我觉得我在数学课上喜欢的那个男生永远都不会和我约会。

Don't give up hope! Have you been chatting with him recently?

别放弃希望！你最近和他聊天了吗？