3,If my lawyer _____here last Saturday,he _____me from going.
题目
3,If my lawyer _____here last Saturday,he _____me from going.
A.had been,would have prevented
B.had been,would prevent
C.were,would prevent
D.were,would have prevent
为什么不选D
答案
楼上不要瞎说
条件句里要用'过去完成时'表对过去的虚拟,句子里有last saturday所以要用had been.
如果用were那就对现在的虚拟,这个和last saturday有冲突
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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