He's 38.

　　Really? /Are you sure?

　　I want to break up with you.分手

　　Are you serious? 你是认真的吗?

　　I quit my job.我把工作辞了

　　Are you joking?

　　Do you mean it? 是真的吗?

　　Are you kidding?

　　Do you think you'll get a raise?

　　I doubt it. /It's doubtful!

　　I don't think so.

　　I wouldn't bet on it.

　　It's chancy. *俚语。

　　It's iffy. *非常随便的说法

　　What do you think?

　　It sounds fishy to me. 听起来很可疑。

　　It sounds suspicious to me.

　　It sounds funny to me.

　　Something's fishy.

　　I smell a rat. *很可疑

　　He said she is his sister.

　　I won't buy that story. 我不信他的话

　　But, it's true.

　　I don't buy it.

　　I won't believe that story.

　　She told me she likes you.

　　Do you think she's serious?

　　I don't take him too seriously. / I don't take him very seriously.我不把他的话太当真

　　I don't pay much attention to what he says.

　　What makes you say that?

　　I don't believe him. /I don't trust him.

　　I don't think he is telling the truth.

　　I think he is lying.

　　I won two tickets to Hawaii!

　　It's too good to be true.太好了吧、难以置信

　　It's so unbelievably good that there has to be something wrong.

　　Nothing this good ever happens, it must be a mistake.

　　It can't be! It's too good to believe!