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请问一下主语从句与宾语从句的区别!请详细一点说明!

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请问一下主语从句与宾语从句的区别!请详细一点说明!
请问一下主语从句与宾语从句的区别!请详细一点说明!
主语从句与宾语从句两者的用法和在句中的作用是不同的,下面从它们的各自用法,介绍:
一.主语从句
主语从句 定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句.
主语从句是在复合句中充当主语的从句,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.
1.It 作形式主语和it引导强调句的比较
It 作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.而it引导的强调句则是对句子某一部分进行强调,无论强调的是什么成分,都可用连词that.被强调部分指人是也可用who/whom.例如:
It is a pity that you didn’t go to see the film.
2.用it 作形式主语的结构
(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
(2) it is +形容词+从句
It is natural that… 很自然…
It is strange that… 奇怪的是…
(3) it is +不及物动词+从句
It seems that… 似乎…
It happened that… 碰巧…
(4) it +过去分词+从句
It is reported that… 据报道…
It has been proved that… 已证实…
3.主语从句不可位于句首的五种情况
(1) if 引导的主语从句不可居于复合句句首.
(2) It is said ,(reported) …结构中的主语从句不可提前.例如:
It is said that President Jingo will visit our school next week.
(3) It happens…,It occurs… 结构中的主语从句不可提前.例如:
It occurred to him that he failed in the examination.
(4) It doesn’t matter how/whether …结构中的主语从句不可提前.例如:
It doesn’t matter whether he is wrong or not.
(5) 含主语从句的复合句是疑问句时,主语从句不可提前.例如:
Is it likely that it will rain in the evening?
4.What 与that 在引导主语从句时的区别
What 引导主语从句时在句时在从句中充当句子成分,如主语.宾语.表语,而that 则不然.例如:
What you said yesterday is right.
二:宾语从句的几个特征:1、引导词:what\which\whose\when\whether\if\where
2语序:宾语从句必须是用陈述语句.
如:I think that you must work harder.
宾语从句的引导词、连接词的区别、否定转移等现象.
(1)表达时间的几个句型:一般用when或者是what time:
What time will the train leave?
由于时刻都是固定的,也可以用一般现在时代替一般将来时:
What time does the train leave?
(2)时间的表达方式:8:19(nineteen past eight),7:57(three to eight),在时间的中间也可以加上分的单词(minutes)
(3)had better +动词原型.意思是提要求,建议.但是上下级不能用这种方式,因为语气太重:
You had better give up smoking .
(4)sb leave sth +地点
I left my book in my classroom yesterday.
(5)may I have your name(address\age)?一般询问对方的年龄、名字等,不要习惯以前的问法,这样很不礼貌,而是要采访上面的问法.以前的习惯是:how old are you?\what's your name?
(6)修饰名词的代词次序:限-描-大-形---年---颜----籍----物--------类+名词:
this is a bridge.
This is a beautiful bridge