doubt的用法 doubt的用法及短语高中？

doubt的用法及短语高中？

1.Whether he will continue to be successful in future is open to doubt.他今后能否继续获得成功值得怀疑。

2.There seems no reason to doubt her story.似乎没有理由怀疑她所说的话。

3.The success of the system is not in doubt.这种制度的成功确定无疑。

doubt与wheather用法？

doubt之前表示否定，要接that从句，例如 there is no doubt that。doubt之前表示肯定，后面用weather /if从句，例如I doubt weather we can get there in time.

doubt宾语从句的用法？

一般来说，如果doubt用于肯定句，引导的宾语从句由if, whether, what, how等词引导，不能由that引导。

I doubt whether the new one will be any better.

如果doubt 用于否定句，引导的宾语从句只能由that引导，或省略that。

I never doubted (that) she would come.

1.The research showed beyond doubt that smoking contributes to heart disease.这项研究确实表明吸烟会导致心脏疾病。

2.She knew beyond a shadow of a doubt that he was lying.她十分清楚地知道，他在说谎。

3.She knew without a shadow of a doubt that he was lying to her.她十分清楚他在对她撒谎。

但是需要符合语法，像“I doubt how to achieve it”这样根本就是语句不通畅，需要将“how”改成“if”,这样的意思就是“我对能否完成这个表示怀疑”

doubt有以下含义

n.

疑惑;疑问;不确定;不相信

v.

无把握;不能肯定;认为…未必可能;怀疑;不相信;不信任

扩展资料：

例句：

1、N-VAR 怀疑;疑虑

If you have doubt or doubts about something, you feel uncertain about it and do not know

whether it is true or possible. If you say you have no doubt about it, you mean that you are

certain it is true.

This raises doubts about the point of advertising...

这对做广告的意义提出了疑问。

2、VERB 不能肯定;认为…未必可能

If you doubt whether something is true or possible, you believe that it is probably not true

doubt后什么时候用if何时用whether？

doubt否定句式后加that

eg:thereisnodoubtthat……

肯定句后加whether或者if

1.doubt如果是动词引导宾语从句时,如果主句是肯定句,则宾语从句的引导词可用if/whether.

如：I doubt if/whether he is a student.

当然,如果此宾语从句中含有or/or not时,只能使用whether.

如：I doubt whether he is a student or not.

I doubt whether he is a student or a teacher.

另：doubt如果是动词引导宾语从句时,如果主句是否定句/疑问句,则宾语从句的引导词只能用that.

如：I dont doubt that he is a student.

2.doubt如果是名词引导同位语从句时,如果主句是肯定句,则同位语从句的引导词只能用whether.

如：I have doubt whether he is a student.

doubt如果是名词引导同位语从句时,如果主句是否定句/疑问句,则同位语从句的引导词只能用that.

如：There is no doubt that he is a student.

到此，以上就是小编对于doubt的用法的问题就介绍到这了，希望介绍关于doubt的用法的4点解答对大家有用。