主语从句讲解PPT课件

It is a fact that…
事实是…
It is an honour that…
…非常荣幸
It is common knowledge that… …是常识
It was an honour that I was invited to the party.
（2）It + be + 形容词 +（主语）从句
据报道… 已证实… 据说… 决定… 相信… 众所周知…
It is said that President Obama will visit our
2s02c0年h9月o28o日l.
9
❖ 填空练习：
❖ 1) _W__h_e_re____ the meeting will be held next week hasn’t been decided yet.
（3）连接代who,whom,wห้องสมุดไป่ตู้ose,what,which,whoever,
whatever,whichever,连接副词when,where,how,why
What she did is not yet known.
Whoever comes is welcome.
How she can keep healthy is a secret.
2020年9月28日
3
在主语从句中，谓语动词一般用单数。 Where we will get together has not been decided. 但谓语动词用单数还是复数，不可一概而论，而要视句 子的意义而定。 What I need is money. What I need are books.
❖ 2) _W__h_e_n____ the plan will be carried out is still unknown.
❖ 3) _W__h_e_n____ the building of the car factory will be started hasn’t been decided yet.
2020年9月28日
5
what 与that 在引导主语从句时的区别 What在引导主语从句在从句中充当句子成分，如主语、 宾语、表语，而that 则不然。 What she said yesterday is right. That he is still alive is consolation.
主语从句
2020年9月28日
1
主语从句定义： 主语从句是在复合句中充当主语的从句， 其功能同名词一样。
2020年9月28日
2
引导主语从句的关联词有：
（1）从属连词that, 不能省略。
That she left him made him heart-broken.
（2）从属连词whether
Whether he’ll take part in the play is clear.
2020年9月28日
6
it 做形式主语 It做形式主语代替主语从句，主要是为了平衡 句子结构，主语从句的连接词没有变化 。
It is still a mystery what caused the accident.
2020年9月28日
7
用it作形式主语的句型
（1）It + be + 名词 +（主语）从句
2020年9月28日
10
谢谢您的指导
THANK YOU FOR YOUR GUIDANCE.
感谢阅读！为了方便学习和使用，本文档的内容可以在下载后随意修改，调整和打印。欢迎下载！
2020年9月28日
汇报人：云博图文 日期：20XX年10月10日
11
It is natural that… It is strange that…
很自然… 奇怪的是…
It was strange that he should fail in the exam.
2020年9月28日
8
（3）It+不及物动词+（主语）从句
It seems that… It happened that… It appeared that…
2020年9月28日
4
如果由and连接两个或两个以上的主语从句作主语时， 谓语动词用复数；有两个或多个连接词 引导一个主语 从句时，谓语动词用单数。 When they will start and where they will go have not been decided yet. When and where the meeting will be held has not been decided.
似乎… 碰巧… 似乎…
It seems that he has seen the film.
（4）It＋过去分词＋从句
It is reported that… It has been proved that… It is said that… It is decided that… It is believed that… It is known that…
❖ 4) _W_h_i_c_h____ team will win the match is still unknown.
❖ 5) _W__h_a_t ____ we need is more time.
❖ 6) _W__h_e_th_e_r__ we can arrive at the airport before 8 o’clock is still a question.