主语从句课件-辽宁省沈阳市第十中学高三英语一轮复习

Develop it
形式主语
主语从句
It’s our social responsibility that we should do some voluntary work .
Our social responsibility is __th__a_t we should do some voluntary work.
在英语的句子结构中，本来该由名词 充当的主 语、宾语、表语和同位语，由 一个句子来充当,这个句子就叫: 名词性从句。
Fra Baidu bibliotek语从句
名
词
宾语从句
性
从
表语从句
句 同位语从句
多 由 that, wh- 疑 问 词 或 whatever等关系代词引导
Noun clauses as the subject
理解主语从句
表语从句
Our social responsibility _t_h_a__t_ we should do some voluntary work is necessary.
一.相关概念
1.名词：表示人或事物的名称的词 2.名词的句法作用：名词在句中主要作 主语,宾语,表语和同位语。另外还可以作 定语,状语。 3.名词性从句：
他通过了考试让老师很高兴。
He passed the exam. It made the teacher happy. He passed the exam made the teacher
happy. That he passed the exam made the teacher happy.
理解主语从句
3) It +不及物动词+that
It happened that...
碰巧……
It occurred to me that…我突然想起…
It appears/seems that… 似乎，好像…
It turned out that… 原来…
*_I_t_h_a_p__p_e_n_e_d_t_h_a_t_(刚好)I was out yesterday.
*__It__is_a__p_it_y__th_a_t__(很可惜)we lost the match. *__It__is_a__f_a_ct__th_a_t_(这是事实)he cheated in the exam.
2) It is + adj. +that It’s certain that… 肯定… It is possible/likely that... 很可能…… It is obvious/clear that… 很明显… It is true that…的确…
difference. What we need is more time.
主语从句的引导词
1.连接词 ：that、whether
不作成分
无意义
“是否”
2. 连接代词 ：who、 whom 、whose、 what、
which、 whoever、 whatever、 whichever
作主/宾/ 表
“It”
refers
to名N…o词u?nT性hca从ltawu句eseshould
do
充当主语 subject
some voluntary work.
Replace “it “!
That we should do some voluntary work is our social responsibility.
*_I_t_i_s_r_e_p_o_r_t_e_d_t_h_a_t_(据报道)20 people were killed in the accident.
It is necessary \important \natural\... that…
+(should) +do… *I_t_i_s_p_o_s_s_ib_l_e_t_h_a_t_(很可能)she will come back tomorrow.
*I_t_i_s_o_b_v_i_o_u_s_t_h_a_t_(很明显) he is an English.
volunteers
The pictures tell us about vo__lu__n_t_a_r_y_ work.
宾语
The pictures tell us that we should do some voluntary work.
宾语从句
It’s our social responsibility.
这样就构成了下面一些常用句型:
1) It is + n. +that
It is a pity/shame that... 可惜的是……
It is a surprise that… 令人吃惊的是…
It is a fact that…
事实是…
It is common knowledge that … …是常识
*__It__o_cc_u_r_r_e_d__to__m__e_t_h_a_t(我突然想起)I forgot
to sent the letter.
4) It + be +过去分词+从句 It is said that... 据说…… It is known to all that... 众所周知…… It is reported that... 据报道…… It is believed that...据相信……;人们相信…… It is suggested that + (should）do... 建议……
他何时要来还不清楚。 When will he come? It is not clear. When will he come is not clear.
When he will come is not clear.
找出主语从句
That he will succeed is certain. Whether he will come makes no
3. 连接副词： when、 where、why、how
作状语
主语从句的常用句型
That he will win the match is certain. It is certain that he will win the match.
注解：一般来说主语从句都是放在 句首 , 但有时为了使句子 保持平衡 ,避免”头重脚轻”, 常用 it 作 形式主语 ，从而把主语从句放在 后面 ．