The army was well-trained and well-armed,and had little difficulty defeating the enemy.
题目
The army was well-trained and well-armed,and had little difficulty defeating the enemy.
这句话中defeat为什么要加ing?
答案
因为defeat前面有difficulty 而 difficulty 的固定搭配是 have difficulty in doing ,其中in常被省略,所以就变成了原句中的样子哦~
还如：
He has a lot of difficulty getting up. 他每次起床都很难.
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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