doubt可数吗

例句：We doubted him a liar.我们怀疑他是个骗子。 Nobody doubts him to have been honest.没有人怀疑他曾经是诚实的。Is there any

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例句：We doubted him a liar. 我们怀疑他是个骗子。

Nobody doubts him to have been honest. 没有人怀疑他曾经是诚实的。

Is there any doubt that he is a thief? 他是个贼难道还有疑问吗?

There is some doubt whether she will come on time. 她会不会准时来还不一定。