2024年初中英语一轮复习知识点之主语从句和表语从句 讲义

2024年初中英语一轮复习知识点之主语从句和表语从句 主语从句用法归纳 1．that 引导主语从句时，that 没有意义，但不能省略。（that引导宾语从句时可以省略。） 2．从句作主语时，多数情况下由 it 作形式主语，而把主语从句放在后面，尤其是谓语部分（包括宾语）较短的情况下。 3．whether 既可以引导主语从句也可以引导宾语从句，但if不能引导主语从句。whether 后面可以加or not, 而if 不能与or not 连用。作介词宾语时不用if. 一、主语从句的引导词 主语从句通常由连词that和whether、连接代词或连接副词以及关系代词型what引导。 1. that引导 That he is still alive is a wonder. 他还活着，真是奇迹。 That we shall be late is certain. 我们要晚了，这是确定无疑的。 That he should have ignored the working class was natural. 他忽视工人阶级是很自然的。 That she is still alive is a consolation. 她还活着是使人感到宽慰的。 That she became an artist may have been due to her father’s influence. 她成为画家可能是受她父亲的影响。 That you are coming to London is the best news I have heard this long time. 你将来伦敦是好久以来我听到的最好消息。 That she was chosen made a tremendous stir in her village. 她被挑选上，在她村 子里引起很大轰动。 2. whether引导 Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。 Whether they would support us was a problem. 他们是否会支持我们还是一个问题。 3. 连接代词引导 Whoever is top from wins the game when two matched players meet. 两强相争勇者胜。 Whichever (of you) comes in first will receive a prize. 无论(你们)谁先到都可以得奖。 Whichever you want is yours. 你要哪个哪个就是你的。 4. 连接副词引导 When we arrive doesn’t matter. 什么时候到没有关系。 How it was done was a mystery. 这是怎样做的是一个谜。 How this happended is not clear to anyone. 这件事怎样发生的，谁也不清楚。 How many people we are to invite is still a question. 邀请多少人还是一个问题。 Where I spend my summer is no business of yours. 我在哪里过暑假不关你的事。 5. 关系代词型what引导 What we need is money. 我们需要的是钱。 What I want to know is this. 我想知道的就是这一点。 What’s done is done. 事已成定局。 What he says is not important. 他说的话并不重要。 What I am telling you is mere impressions. 我和你说的都不过是一些印象而已。 What make the river more beautiful are the lotus plants growing in the water. 为河水增色的是水里的荷花。 What you need is a good-sized canvas bag. 你需要的是一个比较大的帆布袋。 What I am afraid of is their taking him to Portugal. 我担心的是他们把他带到葡萄牙去。 What struck me was that they have all suffered a lot. 给我很深印象的是他们都受过很多苦。 二、主语从句与形式主语it 有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。这分三种情况： (1) 对于以连词that引导的主语从句，通常用形式主语代主语从句： It’s a pity that he didn’t come. 很遗憾他没来。 It is important that he should know about this. 他必须知道此事。 It’s vital that we be present. 我们出席是至关重要的。 It was intended that you be the candidate. 大家的意图是让你当候选人。 It is important that this mission not fail. 这项使命不失败至关重要。 It is essential that a mee ... ...