It seems that John will not come here today.
题目
It seems that John will not come here today.
But he _____he_____come.
A.did say would B.does say will
C.has said would D.said will
为什么
答案
选C,主句用现在完成时,从句用一般过去时.
因为C项表示他说过会来的,而直到现在他也还是说过,还存在影响,此句很明显强调过去发生的动作对现在还存在影响,而从句后则用一般过去时,强调他的动作.
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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