2022年高考英语语法知识点梳理精讲之表语从句和主语从句

1、2022 年高考英语语法知识点梳理精讲之表语从句和主语从句表语从句 一、表语从句的连接词一、表语从句的连接词1.从属连词 that 引导的表语从句The trouble is that I have lost his address麻. 烦的是我把他的地址弄丢了。The fact is that he doesnt really try.事实是他没有做真正的努力。2.从属连词 whether 引导的表语从句The question is whether we can catch the early bus.问题在于我们是否能赶上早班车。What they want to know is whe

2、ther he is capable of holding thatimportant post.他们想知道的是他是否有能力保住那一重要职位。连接代词和连接副词引导的表语从句This is what we want.这正是我们所需要的。The problem is who can complete the difficult task.问题是谁能完成这项困难的任务。That is why she had a day off yesterday.这就是她昨天请一天假的原因。The problem is where we should stay.问题是我们应该呆在哪里。【提示】Thats beca

3、use .意为“这是因为”，强调原因。Thats because he didnt understand me.那是因为他没有理解我。Thats why .意为“这是为什么”，强调结果。Thats why he got angry with me.那正是他对我生气的原因。The reason （why .）is that .意为“原因是”。The reason why I got angry with me was that he didnt understand me.我难过的原因就是他不理解我。（why 引导的定语从句）从属连词 as，as if/as though 引导的表语从句表语从句

4、 二、表语从句的常用句式Things are not always as they seem to be.事物并不总是如其表象。He looks as if/as though hes tired.他好像累了。二、表语从句的常用句式It+seem/appear+that .It appeared that he was talking to himself.好像他在自言自语。It seemed that he didnt recognize me.他似乎没认出我来。It seemed/appeared that he had made mistakes in his work.好像他在工作中犯

5、了错误。It+系动词+as if/as though .It looks as if we are going to have snow.看样子天要下雪了。She seemed as though she couldnt understand why Laura was there.看来她好像不能理解为什么劳拉呆在那儿。It sounds to me as though theres a tap running somewhere.我好像听到某处水龙头流水的声音。主语从句 一、主语从句的连接词一、主语从句的连接词1.从属连词 that 引导的主语从句That youre leaving is

6、a pity.很遗憾你要离开。That he is still alive is a wonder.他还活着，真是奇迹。2.从属连词 whether 引导的主语从句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.连接代词和连接副词引导的主语从句Who has broken the glass is unknown.谁打破了玻璃现在还不知道。What he did last night is being

7、investigated.他昨天晚上干了些什么正在调查之中。How it was done was a mystery.这是如何完成的是一个谜。When he was born is unknown.他生于何时还不知道。主语从句 二、it 作形式主语二、it 作形式主语that 引导的主语从句It+be+名词+thatIt is a good thing that 是好事情It is a fact that 事实是It is a pity/a shame that 真遗憾It is a surprise that 令人惊奇的是It is a question that 是个问题It is co

8、mmon knowledge that 是常识It is good news that 是好事情It is ones belief that 某人认为Its a pity that he didnt come.很遗憾他没来。It is a mystery how he is going to do it.他打算如何做是个谜。It+be+形容词+thatIt is certain that 肯定It is important that 重要的是It is impossible that 不可能It is likely that 很可能It is obvious/clear that 很明显It

9、is surprising that 令人惊讶的是It is natural that 那是自然的It is necessary that 有必要 It is possible that 很可能It is strange that 很奇怪 It is possible that he has stolen the car.很可能他偷了小汽车。It is certain that he will leave for Beijing tomorrow明.天他肯定要去北京。It is quite clear that he has read the book.很显然，他读过这本书。It+be+过去分

10、词+thatIt is agreed that 大家同意It is argued that 大家争论It is assumed that 假定It is believed that 大家相信It has been decide that 大家决定 It is hoped that 大家希望 It is （well）known that 家喻户晓 It is reported that 据报道 It is recommended that 据推荐It is rumored that 谣传It is said that 据说It is suggested that 有人建议It is suppos

11、ed that 大家推测It is thought that 大家认为It must be remembered that 务必记住 It is taken for granted that 被视为当然Its decided that the meeting will start at 8 in the morning.定于明天上午八点开会。It is suggested that you （should）spend more time in studying English.你应该花更多的时间学习英语。【提示】 在以上三种句式中，主语从句用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词

12、要用虚拟语气“should+动词原形”，should 可以省略。It+不及物动词+thatIt appears that 好像是It happens that 碰巧是 It occurs to sb.that .某人突然想起It seems that 好像是It strikes sb.most that 令某人印象深刻的是 It turns out that 结果是It happened that I had no money on me.碰巧我身上没带钱。It seems that your plan is more practical.你的计划似乎更切实可行。It appears that

13、 everybody is here.Lets start.看来大家都到了，咱们开始吧。It turns out that our team has won the game结.果是我们队赢了这场比赛。It really matters that you havent turned up.你没来，这的确很有影响。It occurred to me that we should get in touch with the manager.我突然想起我们应该与经理联系。whether 引导的主语从句It makes little difference whether we go or stay.我们去还是留没有多大差别。Its not yet settled whether I am going to America我.去不去美国还没定。It was a problem whether th