M3 Unit1 Grammar
名词性从句
1.定义:在句子中起名词作用的句子叫名词性从句(Noun Clauses)。名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同的语法功能,名词从句又可分别称为_____从句、______从句、_____从句和_______从句。
主语从句:通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。
例:That he is still alive is sheer luck.
他还活着全靠运气。
It is known to us all that his job is important.
众所周知,他的工作很重要。
注:在主语从句中,不能用if来引导,要用whether。
例:Whether he will go is not clear to us. (正)
If he will go is not clear to us. (误)
宾语从句:放在动词或介词之后。有时用it 做形式宾语,宾语从句置于句尾。
例:John said that he was leaving for London on Wednesday.
约翰说他星期三要到伦敦去。
He feels it necessary that we often practice English.
他觉得我们有必要经常练习英语。
同位语从句:一般放在名词之后,所起到的作用是说明名词的内容。(fact ,hope , idea, word=news, doubt, suggestion, belief, opinion, decision , truth, promise, rule…)若同位语从句 较长,而主句较短时,常会把同位语从句置于句尾。
例:I have no doubt that he will win.
我不怀疑他会赢。
表语从句:放在be/系动词之后。
例:The truth is that the fog is too thick for the bus to run that far.
事实就是大雾太浓,公交车走不了那么远。
巩固练习
划出下面句子中的从句,并说明是什么从句
1. She sensed that she was being watched. ________
2. I’m interested in who that tall man is. ________
3. Whether he’ll be able to come is not yet known. ________
4. The truth is that the fog is too thick for the bus to that far. ________
5. The fact that Polly didn’t ask for the man’s name is a pity. ________
6. The news that you told us is exciting. ________
7. That I can pay back the help that people give me makes me happy. _____
8. It has not been decided who will go with us. _____________
9. That is what we agreed on at the meeting. ________________
10. It is still a mystery whether there are Yetis in the world. _____________
11. We all think it necessary that we should learn a foreign language.
2.语序: 所有的名词性从句都用____________语序。
3.关联词:可分三类
连接词: that(连接作用/无意义,从句结构和意义完整;引导动词宾语从句可省略;当两个that从句并列做宾语从句时,第二个that不能省略。) , whether, if (连接作用/是否,从句结构完整但意义缺少;if 只引导动词宾语从句且不与or not,to do 连用)
连接代词:what , whatever, who, whoever, whom, whomever, whose, which,
whichever(连接作用,有词意,充当句子成分)
连接副词:when, whenever, where ,wherever, how, however, why(连接作用,有词意,充当句子成分)
4.考点 1)区分同位语从句与定语从句 (方法:定语从句是对先行词起修饰作用,而同位语从句则解释说明前面名词的具体内容。)
Do you know the fact that he stole the car?
同位语从句(从句结构完整,that只起连接作用)
Do you know the fact that they were talking about? 定语从句(that在从句中作about宾语)
练习:判断是同位语从句还是定语从句
The news that he told me is that Tom would go abroad next year. ____________
The news that Tom would go abroad is told by him.___________
2) whether 和 if 的用法
1)yes-no型疑问从句
从属连词if, whether引导的名词从句是由一般疑问句或选择疑问转化而来的,因此也分别被称为yes-no型疑问句从句和选择型疑问从句,其功能和wh-从句的功能相同。例如:
主语:Whether the plan is feasible remains to be proved.
这一计划是否可行还有等证实。
宾语:Let us know whether / if you can finish the article before Friday.
请让我们知道你是否能在星期五以前把文章写完。
表语:The point is whether we should lend him the money.
问题在于我们是否应该借钱给他。
同位语:They are investigating the question whether the man is trustworthy.
他们调查这个男人是否值得信赖。
形容词宾语: She's doubtful whether we shall be able to come.
她怀疑我们是否能够前来。
介词宾语: I worry about whether he can pass through the crisis of his illness.
我担心他是否能度过疾病的危险期。
2)选择性疑问从句
选择性疑问从句由关联词if/whether…or或whether…or not构成。
例如:
Please tell me whether/if they are Swedish or Danish.
请告诉我他们是瑞典人还是丹麦人。
I don't care whether you like the plan or not.
我不在乎你是否喜欢该计划。
巩固练习:
1. I asked her __________ she had a bike.
2. ________ we will hold a party in the open air tomorrow depends on the weather.
3. We’re worried about ________ he is safe.
4. The question is ________ he should do it.
5. I don’t know ________ or not he is well.
3) that 用法
1) 由从属连词that引导的从句叫做名词性that-从句。
That只起连接主句和从句的作用,在从句中不担任任何成分,本身也没有词义。名词性that-从句在句中能充当主语、宾语(动词宾语从句可省略that)、表语、同位语和形容词宾语。
例如:
主语:That he is still alive is sheer luck. 他还活着全靠运气。
宾语:John said that he was leaving for London on Wednesday.
约翰说他星期三要到伦敦去。
表语:The fact is that he has not been seen recently. 事实是最近谁也没有见过他。
同位语:The fact that he has not been seen recently disturbs everyone in his office.
最近谁也没有见过他,这一情况令办公室所有的人不安。
形容词宾语:I am glad that you are satisfied with your job.
你对工作满意我感到很高兴。
2)That-从句做主语通常用it作先行词,而将that-从句置于句末。
例如:
It is quite clear that the whole project is doomed to failure.
很明显,整个计划注定要失败。
It's a pity that you should have to leave.你非走不可真是件憾事。
巩固练习:
1. I don’t think ________ she is coming.
2. It is a pity ________ he has made such a mistake.
3. The reason is _________ he is careless.
4. The news ________ our team won the match inspired us.
5. I don’t think it necessary _________ you should read English aloud.
6. He told me ________ his father had died and ______ he had to make a living alone.
参考答案:
1. 定义:
主语 宾语 表语 同位语
巩固练习:1. 宾语2. 宾语 3. 主语 4. 表语 5. 同位语6. 定语 7. 第一个that 从句 主语从句 第二个that 从句 定语从句 8. 主语 9. 表语 10. 主语 11. 宾语
2. 语序: 陈述句
3. 考点:1) 定语 表语 ; 同位语
2)1. if/whether 2-5 全部用whether
3) 1. that或省略 2.that 3. that 4.that 5. that 6. 省略;that
1 / 4