50 do you think that I should enter for the competition 为什么不可以用whether
题目
50 do you think that I should enter for the competition 为什么不可以用whether
答案
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.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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