I have my doubts

We use this expression to say that we are a bit suspicious about something, or not sure that something is true.

Example.01

01

Is Bonnie really an Abba fan?

Bonnie真的是一个Abba（瑞典流行乐队）粉丝吗？

Well, I have my doubts- I saw her in a heavy metal concert last week, so..

嗯，我不太确定，上周我在一个重金属演唱会上看到过她，所以...

Example.02

02

Do you think Lan is really going to sell his house and go and live abroad next month?

你觉得Lan下个月真的会把房子卖了然后出国生活吗？

I have my doubts. He hasn't done anything about it yet and it takes time.

我不太确定。他还啥都没干呢，而且卖房出国这都需要时间的。