I don’t think Bill has finished his maths homework,______?
题目
I don’t think Bill has finished his maths homework,______?
A.don’t I B.do I C.has he D.hasn’t he
答案
反义疑问句中但当陈述部分的主语是I(we),谓语是think,believe,suppose,expect这类动词时,附加疑问部分则往往与从句中的主语和谓语动词保持对应关系,但要注意否定的转移.
例如：I suppose that he’s serious isn’t he?I don’t think she cares,does she?
所以选C
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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