虚拟语态问题
题目
虚拟语态问题
If he had worked hard,he (would have succeeded)
为什么不能用would succeed?
答案
这句是对过去,而过句式是 If 主语+had+过去分词,主语+would / should / could / might + have +过去分词 例如:If I were in your position I would marry her
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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