1. have my doubts.我很怀疑。
I have my doubts-/I am doubtful./I smell a rat here.
It's fishy./It's reliable./It's a little suspicious./It's strange.
情景对话
A:He said he loved he。他说他爱她。
B:I am doubtful.我对此表示怀疑。
A:The final examination will be held at the end of this month. Have you made a good preparation?这个周末就要期末考试了。你做好准备了吗?
B:Sure. I've reviewed all the lessons I've learned at this academic yea。当然。我已经复习好这个学期学的所有功课了.
A:Are you sure you can do well this year?你肯定你可以在今年的考试中取得好成绩?
B:I'm a hundred percent certain.我肯定。
A:According to what you did last time I have my doubts.根据你上次所说的，我表示怀疑。
B:I'm sure I can get a 95 this time.我有把握这次我可以考95分。
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are lying!你在说谎。
That's a lie./Your noise is growing.
Do you think I will fall for that?/Don't try to fool me with your lies. I don't buy that./Don't lie to me./You are cryingwolf again.
You don't fool me./Is it true?/You are lying!
短对话
A:I am divorced.我离婚了。
B:You are lying!你骗人!
3. have no doubt.我不会怀疑。
I have no doubt./No doubt about it./Without a doubt.
短对话
A:We will win the game.我们会赢得比赛的。
B:No doubt about it.对此我不怀疑。