资源简介

(共29张PPT)
UNIT 1　Face values
(单元主题语境：人与自我——外表与内心的关系)
Section Ⅱ　Using language
主语从句
[观察]
1．...what I say is that my pictures aren't hurting anyone ...
2．It's true that inner beauty is very important ...
3．...isn't it better that I'm large and happy，instead of skinny and unhealthy
4．What I really admire is the way she has acknowledged that good health not only makes us more beautiful，but happier，too!
[探究]
1．黑体部分在句中均作______，为______从句；
2．句1和句4中，连接词______引导主语从句；
3．句2和句3中，连接词______引导主语从句，it为形式主语。
主语
主语
what
that
1．连接主语从句的连接词有哪些？
________________________________________________________________________________________________________________________
2．使用主语从句需要注意哪些问题？
___________________________
that、whether、what(ever)、which(ever)、who(ever)、whom(ever)、
whose、when、where、how、why。
语序、时态、主谓一致等。
一、概念和类型
复合句中作主语的从句叫主语从句。引导主语从句的词有从属连词that、whether，连接代词who、what、which、whoever、whatever、whichever等，以及连接副词when、where、why、how。
主语从句通常放在句首，但有时为了使句子结构保持平衡，避免“头重脚轻”，常用it作形式主语，把从句放在后面。
[感知]
1．That he won the game made a tremendous stir in our country.
他赢得比赛一事在我国引起了巨大轰动。
2．Whether it will do us harm or good remains to be seen.
此事对我们有害还是有利还有待观察。
3．It depends on how hard he works whether one can succeed (or not).
一个人能否成功取决于他工作努不努力。
4．(2024·新课标 Ⅰ 卷)What worked on a veterinarian seemed likely to work on his patients.
对兽医有效的方法似乎对他的“病人”也有效。
5．Whatever is worth doing at all is worth doing well.
凡是值得做的事都值得好好做。
6．Which of all those ways is the best is uncertain.
所有那些方法中哪一个最好还不能确定。
7．Whom we should serve is a question of vital importance.
我们应当为谁服务是一个极为重要的问题。
8．Whose carelessness spoilt the work must be made clear.
必须查清是谁粗心大意坏了事。
9．It is still open to question who is to head the group.
谁领导这个小组还有待商榷。
10．When and where the meeting will take place has not been decided yet.
会议时间和地点还未确定下来。
11．Why he did it will remain a puzzle forever.
他做此事的原因将永远是个谜。
12．It is not clear how accurate the results are.
这些结果的精确程度还不清楚。
[探究]
whether
whatever
where
[归纳]
1．从属连词that、whether引导的主语从句：这类连接词只起连接作用，在从句中不充当句子成分，可用it作形式主语代替。
2．连接代词what(ever)、which(ever)、who(ever)、whom(ever)、whose引导的主语从句：这类连接词除了起连接作用外，还在从句中充当一定的句子成分，可作主语、宾语、表语或定语。
3．连接副词when、where、how、why引导的主语从句：这类连接词在从句中常作状语，也可用it作形式主语代替。
if有时也可引导主语从句，但只能用it作形式主语，if从句后置。
It is doubtful if they will come.
他们是否会来值得怀疑。
[即练]
单句填空
1．_____ will take charge of the task hasn't been decided.
2．________ team will win the match is still unknown.
3．______ they suddenly disappeared still remains a mystery.
4．__________ life exists on other planets is not clear yet.
5．__________ comes first will receive a prize.
Who
Which
Why
Whether
Whoever
二、it作形式主语
[感知]
1．It is quite clear that the crime has been done deliberately.
很明显这是故意犯罪。
2．It was clear enough what she meant.
她的意思已经够清楚了。
3．It is uncertain why he denied the charge.
不确定他为什么否认了指控。
4．It is a good thing that we do morning exercises every day.
我们每天做早操是件有益的事。
5．It is a complete mystery what caused the accident.
是什么导致了这场事故完全是个谜。
6．It's not my business how she chooses to live.
她选择如何生活不关我的事。
7．It is required that the machine should be maintained at regular intervals.
机器需要定期保养。
8．It is not yet known whether they will send a delegation to the conference，but we hope they will.
还不了解他们是否会派代表团来参加会议，但是我们希望他们派代表团来。
9．Has it been decided where we are to hold the meeting
我们开会的地点确定了吗？
10．It happened that I wasn't there that day.
碰巧那天我不在那里。
11．It doesn't matter what she looks like.
她的外表怎么样并不重要。
12. It is of great importance whether we can improve our scientific research or not.
我们能否提高我们的科研水平是极为重要的。
[探究]
句 形式主语 其他成分 主语从句
1、2、3 it 表语是_________ 后移
4、5、6 it 表语是______
7、8、9 it 表语是____________
10、11 it 谓语是_______________
12 it 表语是 ____________
形容词
名词
过去分词
不及物动词
介词短语
[归纳]
it作形式主语的常用句型：
1．It is/was＋形容词＋主语从句．
2．It is/was＋名词＋主语从句．
3．It is/was＋过去分词＋主语从句．
4．It＋不及物动词＋主语从句．
5．It is/was＋介词短语＋主语从句．
在“It is important/necessary/natural/essential/impossible ...＋that从句．”和“It is demanded/suggested/required/requested/desired/proposed ...＋that从句．”中，从句的谓语动词用虚拟语气，即“(should) do”形式。
It is necessary/essential that a scientific worker (should) know a foreign language.
科学工作者精通一门外语是非常必要的。
[即练]
完成句子
1．你们都通过了这次很难的考试真是太好了！
____________________ all of you have passed the difficult exam!
2．你错过了这么精彩的演讲真遗憾。
It is a pity __________________________________________．
It is wonderful that
that you have missed the wonderful lecture
3．有人建议明年修建实验楼。
It is suggested ____________________________________ next year.
4．好像他们犯了同样的错误。
It appears ____________________________________．
that the lab building (should) be built
that they have made the same mistake
三、其他相关注意事项
[感知]
1. What we will do next should be decided.
应该决定一下我们下一步该做什么。
2．Where he will get a job after graduation has puzzled him much.
毕业后到哪儿找份工作使他很困惑。
3．What the school needs most are books.
这所学校最需要的是书。
4．When they will start and where they will go have not been decided yet.
他们将在什么时候动身以及要去哪里还没定下来。
5．When and where the movie will be shown is not clear.
这部影片何时何地上映还不清楚。
[归纳]
1．主语从句要用陈述语序。
2．主谓一致
(1)从句作主语时，主句的谓语一般用单数形式。
(2)如果由and连接两个或两个以上的主语从句作主语时，谓语动词一般用复数形式；由两个或多个连接词引导一个主语从句时，谓语动词一般用单数形式。
what引导主语从句时，有时主句的谓语动词应与主句中作表语的名词保持一致。
用适当的连接词填空
Well，boys and girls，1._________ we can learn English well is a good topic for English learners.First of all，your vocabulary decides your English level.2.________ you realise English words are important，please memorize English words immediately.
how
When
Secondly，3.______ you read and memorize can also help you improve your English.
Thirdly，it is true 4._______ the more effective exercises you do，the better your English will be.
Finally，5._________ you can succeed or not depends on how hard you work on it.If you keep these in your mind，you will make progress in your English.
what
that
whether

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