这句英语语法有哪些错误的地方?
题目
这句英语语法有哪些错误的地方?
I know how to solve this problem. But I know who can be resolved.
是不是应该改成：I do not know how to solve this problem.
答案
句子应该改成I don't know how to solve this problem.But I know who can resolved it.
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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