you do his home work!还是you does his work!
题目
you do his home work!还是you does his work!
答案
You do his home work!
He does your home work.
You是第二人称,I是第一人称,不用第三人称单数形式does,用do
he/she/it等为第三人称,用does
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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