谁有英语常见短语类型.如help to do sth ,begin to do sth
题目
谁有英语常见短语类型.如help to do sth ,begin to do sth
答案
stop to do sth.
stop doing sth.
remember to do sth.
remember doing sth.
would like to do sth.
be going to do sth.
will do sth.
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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