名词性从句语法

7. If we will have a meeting hasn't been decided yet. Whether we will have a meeting hasn’t been decided yet.
8. It depends on if the weather is suitable for us to do it. It depends on whether the weather is …...
分类
1、主语从句 ( subject clause ) 2、表语从句 ( predicative clause ) 3、宾语从句 ( object clause ) 4、同位语从句 ( appositive clause )
引导词
从属连词（3个）：that 、if、 whether
连接代词 （9个）：who、 whom 、 what、 which、 whose、 whoever whomever、 whatever、 whichever、
2. It +Vi.(happened/ appeared/ seemed/ occurred to sb.)+ that从句
二、宾语从句
1. it作形式宾语：1）7123结构；2）表“好恶”的动词： love/like/enjoy/ dislike/hate+it+when从句;
depend/ rely/ count on/upon +it+ that从句; appreciate+it+if从句。 3）其他：take it for granted that… 2. 语序是陈述语气。 3. whether与if的区别
(5)It doesn’t matter/makes no difference wh-没关系/影响。
ቤተ መጻሕፍቲ ባይዱ
1. It was quite clear _t_h_a_t_ his uncle was fond of music.
2. It is important that we _(s_h_o_u_l_d_)_s_t_u_d_y(study) hard.
, • _A_s_ is known to all the earth is round.
1.A new school has been set
in the place w__h_e_r_e__ there used to be a lake.
up
in the place __t_h_a_t/_w_h_i_c_h__ used to be a lake.
一些介词或动词的宾语从句如果由连词 that 引导，则 需用 it 先行一步，作形式宾语。
还有些动词后接宾语从句习惯上需要在宾语从句前加 it，这类词有:
A) 动词＋it＋when / if 从句。常见于appreciate, enjoy, like, dislike, love, hate, prefer等少数动词之后。
连接副词（4个）：when、 why、 where、 how
一、常用连接词3种（必须背熟）
1.在句中不作成分且无意思的连接词：that
2.在句中不作成分但有意思的连接词：whether/ if是否， as if/as though似乎，好像
3.在句中作成分也有意思的连接词： what什么，所……的，随句翻 译（主、宾、表）；who谁，……的人（主、宾、表）；which哪 一（个/类等）（主、宾、定）；when何时，……的时候（时间状 语）；where何地， ……的地方（地点状语）；why为什么，…… 的原因（原因状语）；how如何（方式状语）；whatever无论什么； whoever无论是谁；whenever无论何时；wherever无论哪里； whichever无论哪一（个/类等）；however不管怎样；
9. The question is if he himself will be present at the meeting. The question is whether he himself will be present …...
10. He asked me if I could go with him or not. He asked me whether I could go with him or not.
3. It remains a secret _h__o_w__ they climbed up the
mountain.
主语太长了!放到句尾
注意：主语从句一般位于句首，但有时也 可置于形式主语 it 引导的句子中，位于 谓语动词之后。连词 that 不可省，在从 句中不充当成分，只起连接作用.
If与whether的区别：
二、 从句复习重点：1. 宾语从句（其各个注意事项）
2. 主语从句 （各个主语从句的各个句型，尤其是用it作形式主语）
3. 同位语从句的定义（尤其是哪些名词后常用来跟同位语从句）
4. 表语从句句型（A is to B what C is to D）
一、 主语从句 (it作形式主语)
1.It +be+n. /adj. / P.P+ to do/ that从句/doing
2. 以下名词跟同位语从句，且常用that 引导。名词有： fact, idea, news, promise, information, message, belief, doubt, hope, opinion, possibility, thought, wish, truth, question, problem, reply, answer, report, suggestion, advice, order等。
(1) It is ＋ 名词 ＋ 从句 It is a fact that … 事实是…
It is an honor that …非常荣幸
It is common knowledge that …是常识
It is no wonder that… =No wonder that… 难怪…
(2) It is ＋ 形容词 ＋ 从句
He would believe whatever/ anything that I said. (宾语从句)
• _w_h_a_t_ is known to all is that the earth is round.
• _I_t_ is known to all that the earth is round.
如果引出表语从句的名词是一些表示 “建议”或者是“命令”之类的词如
advice, suggestion, proposal, order, plan, idea等, 那么从句中的动词通常用 (should) +动词原形。 1. My suggestion is that we all
(_s_h_o_u_ld_)__ta_k_e_ (take) an active part in the coming sports meet. 2. His proposal was that the work
掌握： whether和if的区别：
We’ll see to _i_t__ __th_a_t__she gets home early . I hate\dislike __i_t____when someone smokes in the office. I’ll appreciate ___i_t___ if you come to our party.
It is natural /strange/important/obvious that…
很自然/奇怪的/很重要的是/很明显的是…
It is likely that…=sb./sth. is likely to do 很有可能
(3) It ＋ 不及物动词 ＋ 从句 It happened that…碰巧…
2. We are discussing a student who can stand for our school to attend the meeting.
2. We are discussing who can stand for our school to attend the meeting.
(_s_h_o_u_l_d_)_b_e_f_i_n_is_h_e_d_ (finish) in five hours.
whever和“no matter＋wh” whever既可引导名词性从句，又可引导 让步状语从句，而no matter wh只能引导让 步状语从句。 e.g. Whatever/ No matter what I said，he wouldn’t listen to me. (让步状语从句)
•anWyhooneevwerhios in charagneyothf itnhge tshuabtject should attend the meeting.
定从 or 名从
1. He gave his mother a gift which pleased her very much.
1. Facing flowers, perfume and make-ups, he wonder which one can please his mother.
It seems/appears that…
似乎…
It occurs to me that…
我突然想到…
(4) It is ＋ 过去分词 ＋ 从句
It is reported/said that…
据报道…,/据说…
=Sb. / Sth. is reported/said to do/be doing/have done
五、注意：1. 表“建议、命令、要求”的词（名词或动词），其后 跟宾从、表从或同位语从句时，需用虚拟语气（should+动原， should可省。）
2. 仔细揣摩that和what的区别。 3. 关注wh-+ever引导的名词性从句。（wh-ever的意思和用法）
温馨提示 同位语从句通常由that引导，但根据 接同位语的名词不同，也可由whether, when, who, how, what, why等引导。 e.g. I have no idea when he will be back. The question who was to blame has never been settled.
1、If不能引导主语从句，而whether可以。 2、引导表语从句用whether，不用if。 3、引导同位语从句用whether，不用if。 4、whether可以引导从句作介词的宾语，不用if 。 5、whether or not; whether to do; discuss whether
找出下列句子中的错误，并总结出规律：
英语名词性从句
Noun Clause
请思考：
1、English is very useful for us . 2、The subject I am interested in is English. 3、We need to master English well. 4、He want to learn the language , English .
in ___w_h_a_t_______used to be a lake.
___w_h__e_re____ there used to be a lake.
• Of all the toys, you shall get whichever you choose.
• Don’t mind others words, and make all your efforts to run after whatever/ what you want.
B) 动词 + 介词(短语) + it + that从句。常见于answer for, depend on, rely on, insist on, look to, see to, stick to 等结构中。
三、 表语从句：
A is to B what C is to D
四、同位语从句
1. 定义：在复合句中，对名词的内容进行解释说明的从 句是同位语从句。