Question

doubt作为动词的用法

Answer 1

一、doubt用作动词

1.doubt+名词或代词.例如：

I doubt his word.我怀疑他的话.

They doubted him before.他们以前曾经怀疑过他.

2.doubt+宾语从句

（1）在否定句和疑问句中,doubt后面接that引导的宾语从句.例如：

I don”t doubt that he can finish the task on time.我相信他能按时完成任务.

Do you doubt that she will succeed?你怀疑她会成功吗?

（2）在肯定句中,doubt后面一般接whether或if引导的宾语从句.例如：

I doubt whether they can swim across the river.我怀疑他们能否游过河去.

He doubts if she will keep her word.他不敢肯定她是否会遵守诺言.

注意：在肯定句中,doubt后面也可以接that引导的宾语从句,但表示疑虑较大或“不相信”.例如：

We doubt that they can complete the work ahead of time.我们不相信他们能提前完成这项工作.

I doubt that he will come.我看他未必会来.