英语语法问题,帮我看看这个句子It is quite common these days for young people in many countries to have a break from studying after graduating from high school.里面的studying和graduating为什么用Ing形式呢?这个句子是主语从句吗?
问题描述：
英语语法问题,帮我看看这个句子
It is quite common these days for young people in many countries to have a break from studying after graduating from high school.
里面的studying和graduating为什么用Ing形式呢?这个句子是主语从句吗?
答
from和after是介词啊
答
ing形式应为前面有介词啊 from after
这个句子简化下就是 It's common for people to have a break
答
是主语从句中的一种,It is是形式主语,真正的主语是从 for开始的.
ing是因为from和after是介词,介词后要加doing的形式.
答
from 和 after都是介词，介词后面必须跟动名词的。所以才加ing。