2022年高考英语语法知识梳理--表语从句和主语从句学案

这是一份2022年高考英语语法知识梳理--表语从句和主语从句学案，共5页。学案主要包含了表语从句的连接词，表语从句的常用句式等内容，欢迎下载使用。

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 truble is that I have lst his address.麻烦的是我把他的地址弄丢了。
The fact is that he desn’t 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 questin 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 t knw is whether he is capable f hlding that imprtant pst.
他们想知道的是他是否有能力保住那一重要职位。
3.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 prblem is wh can cmplete the difficult task.问题是谁能完成这项困难的任务。
That is why she had a day ff yesterday.这就是她昨天请一天假的原因。
The prblem is where we shuld stay.问题是我们应该呆在哪里。
【提示】
①That’s because ...意为“这是因为……”，强调原因。
That’s because he didn’t understand me.那是因为他没有理解我。
②That’s why ...意为“这是为什么……”，强调结果。
That’s why he gt angry with me.那正是他对我生气的原因。
③The reasn （why ...）is that ...意为“原因是……”。
The reasn why I gt angry with me was that he didn’t understand me.
我难过的原因就是他不理解我。（why引导的定语从句）
4.从属连词as，as if/as thugh引导的表语从句
Things are nt always as they seem t be.事物并不总是如其表象。
He lks as if/as thugh he’s tired.他好像累了。
表语从句 二、表语从句的常用句式
二、表语从句的常用句式
1.It+seem/appear+that ...
It appeared that he was talking t himself.好像他在自言自语。
It seemed that he didn’t recgnize me.他似乎没认出我来。
It seemed/appeared that he had made mistakes in his wrk.好像他在工作中犯了错误。
2.It+系动词+as if/as thugh ...
It lks as if we are ging t have snw.看样子天要下雪了。
She seemed as thugh she culdn’t understand why Laura was there.
看来她好像不能理解为什么劳拉呆在那儿。
It sunds t me as thugh there’s a tap running smewhere.
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 yu’re leaving is a pity.很遗憾你要离开。
That he is still alive is a wnder.他还活着，真是奇迹。
2.从属连词whether引导的主语从句
Whether it will d us harm remains t be seen.是否对我们有害还要看一看。
Whether they wuld supprt us was a prblem.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
Wh has brken the glass is unknwn.谁打破了玻璃现在还不知道。
What he did last night is being investigated.他昨天晚上干了些什么正在调查之中。
Hw it was dne was a mystery.这是如何完成的是一个谜。
When he was brn is unknwn.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
1.that引导的主语从句
（1）It+be+名词+that
It is a gd 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 questin that ……是个问题 It is cmmn knwledge that ……是常识
It is gd news that ……是好事情 It is ne’s belief that 某人认为……
It’s a pity that he didn’t cme.很遗憾他没来。
It is a mystery hw he is ging t d it.他打算如何做是个谜。
（2）It+be+形容词+that
It is certain that 肯定…… It is imprtant that 重要的是……
It is impssible that 不可能…… It is likely that 很可能……
It is bvius/clear that 很明显…… It 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 pssible that 很可能…… It is strange that 很奇怪……
It is pssible that he has stlen the car.很可能他偷了小汽车。
It is certain that he will leave fr Beijing tmrrw.明天他肯定要去北京。
It is quite clear that he has read the bk.很显然，他读过这本书。
（3）It+be+过去分词+that
It 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 hped that 大家希望……
It is （well）knwn that 家喻户晓…… It is reprted that 据报道……
It is recmmended that 据推荐…… It is rumred that 谣传……
It is said that 据说…… It is suggested that 有人建议……
It is suppsed that 大家推测…… It is thught that 大家认为……
It must be remembered that 务必记住……
It is taken fr granted that ……被视为当然
It’s decided that the meeting will start at 8 in the mrning.定于明天上午八点开会。
It is suggested that yu （shuld）spend mre 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，谓语动词要用虚拟语气“shuld+动词原形”，shuld可以省略。
（4）It+不及物动词+that
It appears that 好像是…… It happens that 碰巧是……
It ccurs t sb.that ...某人突然想起…… It seems that 好像是……
It strikes sb.mst that 令某人印象深刻的是……
It turns ut that 结果是……
It happened that I had n mney n me.碰巧我身上没带钱。
It seems that yur plan is mre practical.你的计划似乎更切实可行。
It appears that everybdy is here.Let’s start.看来大家都到了，咱们开始吧。
It turns ut that ur team has wn the game.结果是我们队赢了这场比赛。
It really matters that yu haven’t turned up.你没来，这的确很有影响。
It ccurred t me that we shuld get in tuch with the manager.
我突然想起我们应该与经理联系。
2.whether引导的主语从句
It makes little difference whether we g r stay.我们去还是留没有多大差别。
It’s nt yet settled whether I am ging t America.我去不去美国还没定。
It was a prblem whether they wuld supprt us.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
It is unknwn wh has brken the glass.谁打破了玻璃现在还不知道。
It is being investigated what he did last night.他昨天晚上干了些什么正在调查之中。
It is unknwn when he was brn.他生于何时还不知道。