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高中英语语法与词汇《Structures in Use、Grammar in Use》新课标PPT课件优质课下载
表过去用had done,
should/would/could/might do
should/would/could/might have done
1.If
表现在或将来用did，
Subjunctive mood is used to express various states of unreality such as wish, emotion, possibility, judgment, opinion, obligation(义务), or action that have not yet occurred.
2. wish后的宾从
did 现在
had done过去
would/could/might do将来
3. would rather
后的宾从
did 现在/将来
had done过去
4. 表坚持，命令，建议，要求的词
insist/suggest/advise/order that sb (should) do
suggestion/requirement此类名词用法同上
5. It is necessary/important/strange that...should do
6. It is (high/about) time that sb did sth 或should do
Exercise 1:Filling the blanks
1.If I _____ (be) you, I would do it in a different way.
2. If you had followed my advice just now, you _________(be) fine now.
3. If I ____(have) a million dollars, I would first donate some of the money to poor children in remote mountainous areas.
4. The doctor ordered that she ____________ (stay) in bed for a few days.
5. I was so busy then.Otherwise, I __________________(help)