if虚拟语气用法
回答
爱扬教育
2022-06-07
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主句：主语＋would/should/might/could＋动词原形；
从句：should＋动词原形/were to＋动词原形。
例句：If he should go to Harvard University, he would make full use of his time.
如果他要上哈佛大学的话，他就会充分利用他的时间了。
扩展资料
2、提出现在的条件：
主句：主语＋would/should/might/could＋动词原形；
从句：动词过去式。
例句：If he studied at this school, he would know the enviornment around the school very much.
如果他在这所学校学习的话，他会很了解周边环境。
3、提出过去的未发生的条件：
主句：主语＋would/should/might/could have＋动词过去分词；
从句：had＋动词过去分词。
例句： If I had read the book, I would have told you about it.
我如果看过本书，我会把内容告诉你了。
主句：主语＋would/should/might/could＋动词原形；
从句：动词过去式。
例句：If he studied at this school, he would know the enviornment around the school very much.
如果他在这所学校学习的话，他会很了解周边环境。
3、提出过去的未发生的条件：
主句：主语＋would/should/might/could have＋动词过去分词；
从句：had＋动词过去分词。
例句： If I had read the book, I would have told you about it.
我如果看过本书，我会把内容告诉你了。