UC知道有关-ing形式用法有点小疑惑？？
来源：百度知道 编辑：UC知道 时间：2024/07/06 20:36:58
问题在于：若一个句子：When he is compared with other students,he is really clever.高一的时候说如果省略一个主语的话可改为：Compared with other students,he is really clever.但现在老师又说了一种什么把系动词is改为Being然后再加compared with other students,he is really clever.这两种都正确吗？
1.去掉系动词 2.把系动词改为原形再加ING
两种用法分别什么时候用？？
第一种不清楚，不过以前看过一句 he did this work when was tired是对的 还有一句是you should ask these qustions when talking with him这些句子的状语都省略了主语
第二种应该是is being 现在进行时的被动语态
一般情况下直接+ing
eg:crying jumping eating...
结尾为一个辅音一个元音一个辅音结尾的，把末尾字母双写加ing（除元音加y）
eg:running stuying buying...
两个动词连一起，第二个要改成-ing形式。
介词后面的动词要改成-ing形式
动词用作名词如动词作主语要改成-ing形式。
辅音字母+e结尾的单词要去e加ing；
有些ie结尾的单词如die，lie要把ie变成y加ing；
重音在最后一个音节的单词，要末尾双写加ing；
还有就是几个特殊的，就不说了。
一、 下列结构含有ing:
1. keep doing
2. keep /carry on doing
3. keep sb. Doing
4. enjoy doing
5. finish doing
6. be afraid of doing
7. be worth doing
8. be busy doing
9. how about doing//what about doing
10. spend some time (in)doing
11. spend some money (in) buying
12. feel like doing
13. stop/keep/prevent … from doing
14. thank you for doing
15. thanks for doing
16. do some cooking/cleaning/reading/shopp