It seems as if he were an expert 为什么谓语动词要用were 而不是was
题目
It seems as if he were an expert 为什么谓语动词要用were 而不是was
答案
虚拟语气,固定要求 如 if i were you i would have not XXX 如果我是你 怎么怎么,我不是你 我也没做,一种假设 与事实相反
实际上他不是expert 与事实相反.
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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