mary often asks her mother goes shopping with her on sunday对么
题目
mary often asks her mother goes shopping with her on sunday对么
答案
不对,把goes换为to go,则句子就变成正确了
因为有关ask的短语是ask sb to do sth(要求某人做某事)
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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