我想问一下是 Bill is said to have 还是 Bill is said to has
题目
我想问一下是 Bill is said to have 还是 Bill is said to has
例句是Bill is said to have ,但第三人称不是用has的吗?
答案
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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