Stave said that if he had known how it worked,he would have been told
题目
Stave said that if he had known how it worked,he would have been told
答案
这是一个third conditional的句子阿叫做 pass future perfect:过去将来完成时-----------------if he had known how it worked,这后半句用了被动啊 he would have been told-----------------抛开句意原来应该是 if...
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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