动名词在什么情况下用完成时
题目
动名词在什么情况下用完成时
答案
举两个例子：Tom feels like being taken to Beijing.
He was excited for having been praised for what he had done.
再来一个例题
English has a large vocabulary,hasn't it?
Yes, _______ more words and expressions and you will find it more easier to read and communicate.
A.Mastering B.To master C.Master D.Having mastered
选择A选项,因为根据题意可判定,如果你试着去掌握更多的词汇和短语,你才可能会跟好地……
所以有此可排除D,因为D项,意味着这件事已经木已成舟.
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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