50 do you think that I should enter for the competition 为什么不可以用whether

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50 do you think that I should enter for the competition 为什么不可以用whether

50 do you think that I should enter for the competition 为什么不可以用whether
50 do you think that I should enter for the competition 为什么不可以用whether

50 do you think that I should enter for the competition 为什么不可以用whether
Do you think...后的宾语从句须为陈述句.如:Do you think he can finish it?Do you think he
shouldn't do it like that?Do you think 的意思本身就是“你是否认为...”,而whether (还有if)在宾语
从句中的意思就是“是否”,两者连用,意义重复.顺便一提:whether引导的宾语从句可以看作是
由一般疑问句或选择疑问句转变而来.e.g.
Does he like tea?I don't know whether/if he likes tea.
Does he like tea or coffee?I don't know whether he likes tea or coffee.

这里主句是疑问句。而宾语从句是陈述句。所以用that 而不用whether.要分清是对主句还是从句的疑问。