主语从句课件1.ppt

主语从句 概念：在复合句中充当主语的句子就是主语从句。 例如： She will succeed. That she will succeed is certain. 主s 表p 谓v 谓vi 主s 主语从句就是用一个句子来构成主句的主语 主s 谓vi 简单句 复合句 主语从句的引导词有： 1. 用连词that 2. 用连词whether 3.用连词代词who, whose, which, what 等 4.用连词副词how, when, where, why等 例句： 1. That the earth goes around the sun is certain.（注意在主语从句中that不可以省略） 2. Whether we will go camping depends on the weather. 3.Who was to blame is not yet clear. 4.What surprised us most is that he cheated in the exam . 例句： 5.Which book he like most is a mystery. 6. When he can arrive is not known yet. 7. Why he was late is not known yet. That she will succeed is certain. It is certain that she will succeed. 常用it作形式主语，把that引导的主语从句放在句末： 可用it 作形式主语，从句本身置于句末，常见句型有： it +be +形容词+that从句 It’s clear that he was telling the truth. It is probable that we’ll be a little late. It +be+名词词组+that从句 It is a pity that you can’t go with us. 根据缺什么补什么的原则完成以下句子。 1 he will come or not is uncertain. 2 one is better will be decided by yourself. 3 you do in your spare time should do no harm to others. 4 the problem will be solved is still unknown. 5______he set off for Beijing is uncertain. 6______you did just now satisfied your teacher. Whether Which Whatever How When What Thank you !