___ more trees is good for health and it is also important to stop waste from factories ___ our
题目
___ more trees is good for health and it is also important to stop waste from factories ___ our
important to stop waste from factories ___ our surroundings
为什么第一个空要填 planting 而不是 to plant呢?有什么区别?
答案
vivian又遇到你了,今天我生日,再帮你一次
现在分词和不定式都可做主语,但前者表抽象泛指意义,后者表具体特指意义
给你个例子吧
1Mastering a foreign language requires time and patinece.
2To master English within a year is an impossible task for me.
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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