辨析:aim at doing sth.和be aimed at doing sth.
题目
辨析:aim at doing sth.和be aimed at doing sth.
举例说明
we started a project aimed at improving the the living conditions.为什么不可以用aiming at
答案
Compare:
1.We started the PROJECT (which is) AIMED at .
2.WE are AIMING at.,and have started a project,
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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