内容正文:
高三英语一轮复习语法专题
名词性从句
定义:名词性从句在 中充当 , 起 作用的从句。
· 名词性从句的种类
主语从句:在主从复合句中充当 的句子。
When we will start is not clear.
宾语从句:在主从复合句中充当 的句子。
She won’t believe that her son has become a thief.
表语从句:在主从复合句中充当 的句子。
My idea is that we should do it right now.
同位语从句:在主从复合句中充当 的句子。
We heard the news that our team had won.
· 引导词的种类:
⑴从属连词:that(无意义,不作成分)、if、whether(是否,不作成分)
⑵连接代词:(有意义,作主语或宾语)
who; whom(宾语) 、whose(定语)、 which; what(什么);whoever/whomever(无论谁,任何人);whichever(无论哪个,任何一个);whatever(无论什么);
⑶连接副词: (作状语,有意义)
when(何时); where(何地); why(何);how(如何);whenever(无论何时);wherever(无论何地)
【学以致用】
1. he will come is certain.
2. We all agree with you said at the meeting.
3. The truth is I have been there.
4. The fact she was late surprised us.
· 1.主语从句
主语:是句子的主体, 是句子所要说明的人/事/物, 位于句首。
充当主语:n. pron. num. 非谓语动词、短语和从句。
⑴位置:位于句首;但由that引导的主从可放在句尾, 原位置用it作形式主语代替。
⑵引导词:3类
⑶例句:
①_______ he is still alive (adj.活着的)after the earthquake is a wonder (n.奇迹).
②_______ I need is time. 我需要时间。
③_______ I will finish my homework on time(准时)is a problem.
④_______ you want is yours. 你想要哪个,哪个就是你的。
⑤_______ he won the first prize(赢得第一名)in that match(比赛) is unknown.
⑥ It is very important _______ you should try to remember these grammar rules(规则).
⑷ 用it作形式主语的4种类型:
① It+be+过去分词+that...
It is said that...据说...... It is reported that...据报道......
It has been proved that...已证明…… It must be pointed out that...必须指出……
类似的过去分词(词组)还有:known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out等。
② It+be+名词(短语)+that...
It is a surprise that...令人惊奇的是...... It is a fact that...事实是...... It is a pity that...遗憾的是...
It is good news that... ……是好消息 It is a question that... ……是个问题 It is common knowledge that... …是常识
类似的名词还有:a pity;a wonder;a good thing; no