jim has to help his mother do the dishes 同义句转换
题目
jim has to help his mother do the dishes 同义句转换
答案
Jim has to help his mother with the dishes
help sb do sth = help sb with sth 帮助某人做某事.
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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