2026届高考英语二轮复习：表语从句 课件(共19张PPT)

(共19张PPT)
高考语法一轮复习
Predicative Clauses
表语从句
1. The definition of predicative clause.
The question is who will do it.
The question is difficult.
在复合句中充当表语的从句叫表语从句。位于主句的系动词之后，对主语进行解释、说明，使主语的内容具体化。表语从句必须用陈述语序。
（ 表 ）
（ 表 ）
表语从句
2. The structure of predicative clause.
主语 + 系动词 + 引导词 + 简单句
This is why he did it.
表语从句
在复合句中，位于_________之后，充当________的名词性从句称作表语从句。
表语
系动词
可以接表语从句的系动词有:
be动词: am is are;
感官动词：look，feel, sound, taste, smell;
表象系动词：seem（仿佛）, appear（似乎）
持续性动词：remain, keep, stay;
变化系动词：become, get, grow, turn, go, come, run, fall;
终止系动词：prove（证明是）, turn out（结果是）
表语从句的概念
连接词 从属连词 在从句中不作成分 that, whether, as if/as though, because
无含义/ 是否 / 似乎/好像
连接代词 在从句中作主语、宾语、表语、定语 what, who, whom, which,
whatever, whoever, whomever,whichever
whose
连接副词 在从句中作状语 when, where, how, why
表从中不用if
考点一
知识点1 表语从句的引导词
表语从句的构成及引导词
引导表语从句的连接词有三类：
连词that、whether，because, as if/though
疑问代词who, what, which，whom, whose, whatever, whoever, whomever, whichever;
疑问副词when, where, how, why，however, whenever, wherever等
1. 从属连词that引导的表语从句
The fact is that he was lying.
The reason is that they never give up.
His suggestion is that we should tell him.
One idea is that fish is the best brain food.
that 仅起_______作用，______(有/无)词义，______(是/否)充当句子成分，通常________(能/不能)省略。
无
不能
否
连接
1.从属连词whether 引导的表语从句
The question is if we can finish our work.
The question is whether the film is worth watching.
The doctor’s doubt is whether she will survive.
whether起 _________ 作用，意为“_______”，在句中_________(是/否)作成分。
(注意：if ______(能/不能)引导表语从句)。
连接
是否
不
不能
2. 连接代词what(ever), which, who(ever), whom(ever), whose等引导的表语从句
My hometown is no longer what it used to be.
The problem is who we can get to replace her.
The problem is whose work is the best.
The question is what caused the accident.
连接代词在句中起_______作用，还在从句中还充当______、______、______、_______,______(有/无)意义，________(能/不能)省略。
连接
表语
宾语
定语
主语
有
不能
3. 连接副词when, where, how, why引导的表语从句
The problem is how we can find him.
That is where I first met her.
That's why I object to the plan.
Thanksgiving is when people celebrate the harvest.
连接副词在句中起________作用,还在从句中充当_______, _______，______，_______状语，________(能/不能)省略。
连接
方式
地点
原因
时间
不能
This is __________I want.
My English is limited. This is _______I hate reading English books.
The village is _________ I used to spend my holiday.
It is ___________ I really love the way he behaves.
The trouble is __________ we are short of funds.
My problem is __________ coat is suitable for me.
I ‘ d like to start my own business—that’s ________ I want to do if I had the money.
What I want to know is _______will support me.
即学即练
learning and practice
what
where
why
because
that
which
what
who
考点一
知识点2 表语从句三大易混句式
表语从句的构成及引导词
主语为名词reason时，表语从句的引导词要用that， 一般不用why或because。
句式 用法 例句
This/'That is why+结果 意为"这那就是.....to work there. 那就是的原因"，why 引导表语从句。 That's why I want you to work there.
我想要你在那儿工作的原因。
This/That/It is because +原因 意为"这/那是因为.....，because引导表语从句。 It's just because he |doesn't know her. 这这仅仅是因为他不认识她 。
The reason why... is that... 意为".....的原因是…”，why引导定语从句, that引导表语从句。 The reason why he didn't come was that it was raining heavily.他没有来的原因是 (当时)雨下得很大。
1. He failed in the exam. That's _______ he felt frustrated.
felt frustrated.
failed in the exam.
why
做成分(状语)，有意义，不能省略
1.表从中易错连接词 why because
2. He felt frustrated. That's __________he failed in the exam.
because
3. The reason why he felt frustrated was that he failed in the exam.
考点一
知识点3 表语从句中的虚拟语气
表语从句的构成及引导词
as/as if/as though引导的表语从句常跟在特定动词后面，如seem，appear，look，taste，sound，feel等。当as/though引导的表语从句时，从句动作可根据动作发生的真实情况与否用虚拟语气或真实语气。
It seems as if someone is baking a cake.
闻起来好像是有人在烤蛋糕。（根据气味推断，很可能真的有人在烤）
主句主语是advice, suggestion, order, request, requirement,proposal, resolution(决心), idea, motion（提议） , command, desire（愿望）, wish, 等名词时，表语从句的谓语动词常用“(should)+动词原形”形式。
My suggestion is that we (should) have a discussion about this matter instead of just laying it aside. 我的建议就是我们应当讨论一下这个问题，而不是把它放在一边。
as if/as though引导的表语从句如果与事实不符，用虚拟语气;
如果是事实或者有发生的可能性，用陈述语气
1. It sounds as if someone ___ knocking at the door.
(与事实相符)
2. Tom likes to talk big as if he ______(be) an important person.
(对现在的虚拟，用一般过去时，be动词用were )
3. He talks as if he _______ become president tomorrow.
(对将来的虚拟，用would/could/might/should+do)
4. He talked about Rome as if he __________(be) there.
(对过去的虚拟，用had done)
is
were
would
had been
1. The question is____we will have our sports meet next week.
A. that B. if C. when D. whether
2. The reason why he failed is____he was too careless.
A. because B. that C. for D. because of
3. Go and get your coat. It' s _____you left it.
A. where B. there C. there where D. where there
课堂练习
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√
√
【完成句子】
that he didn’t really try
whether the film is worth seeing
it seems as if
1)The fact was _____________________________.
事实是他没有真正地尝试。
2) The question is ____________________________.
问题是这部电影是否值得看。
3) Now _______________she had known Millie for years.
现在看起来好像她认识米莉已有好多年了。
4) My advice is that you _______________________ as often as possible.
我的建议是你要尽可能经常地练习说英语。
5) That’s __________________________________.
那就是我第一次遇见她的地方。
6) The problem is ________________________________.
问题是谁才真正适合做这份艰苦的工作。
practice speaking English
who is really fit for the hard job
where I first met her