主语从句;表语从句.pptVIP

* 主语从句 表语从句 一．主语从句 主语从句在从句中作主语，主语从句可以位于句首，但常见的主语从句多放在句末，句首则用形式主语 it。 That I did not learn the subject clause well was a pity. It was a pity that I did not learn the subject clause well. 注意： 连词that, whether在从句中不担任句子成分，只起连接作用，不能省略。 试比较： This is a factory that produces shoes. That the factory produces good shoes is known to all. if 不能引导主语从句： Whether he will come or not is not known. 注意：who, which, how, when, where, why在所引导的主语从句中可担任主语，宾语，状语，不能省略。可以用形式主语it引导。 Who can tell us what is going to happen is a question. Which of the learning method suits us is not clear. When and where we should go is up to you. Why he insists on doing that is not known. 注意：who, whom, which, what等可以和ever构成合成词，引导主语从句和宾语从句。此类主语从句不能用it引导，引导词在句中担任句子成分，不能省略。 Whoever will do the job has nothing to do with me. Whomever Wang Laowu will marry is none of my business. Whichever Li Cuihua he is going to marry does not interest me. a. It + be +形容词+ that-从句 　It is necessary that…　　　 有必要…… 　It is important that…　　　 重要的是…… 　e.g. It is important that we (should) study hard. b. It + be + -ed 分词+ that-从句 　It is believed that…　　　　　 人们相信…… 　It is known to all that…　　　 众所周知…… 　It has been decided that…　　 已决定…… e.g. It is suggested that we (should) finish it now. 用 it 作形式主语的that- 从句句型 d. It +不及物动词+ that-分句 　It appears that…　　　　 似乎…… 　It happens that…　　　　　　 碰巧…… 　It occurred to me that…　　 我突然想起…… e.g. It appears that she followed my advice. c. It + be +名词+ that-从句 　It is common sense that…　 …是常识 　It is a surprise that…　　 令人惊奇的是… 　It is a fact that…　　　　 事实是…… e.g. It is a fact that we are only students. (1）It is said /reported…结构中的主语从句不可提前。 It occurred to him that he failed in the examination. That he failed in the examination occurred to him. 注意几点： (2）It happens/occurs…结构中的主语从句不可提前。 (3）It doesn’t matter how/whether …结构中的主语从句不可提前。 It doesn’t matter whether he is wrong or not. Whether he is wrong or not doesn’t matter. 1. ______men have learned much from the behav