PART4:经典状语从句 篇一
1．条件状语从句：
1）Lets go out for a walkunlessyou are too tired.（除非，若不；相当于if---not）
即：If you are too tired,we’ll not go out for a walk.
2）You may borrow my bookas long asyou keep it clean.（只要，表示条件的唯一性）
3）Take your umbrellain caseit rains.（以防---，以免---）
4）I can tell you the truthon condition thatyou promise to keep a secret.（条件是---）
5）Supposingit rains, shall we continue the sports meeting?（如果，假如）
6）He wont be against us in the meetingprovided/providingthat we ask for his advice in advance.（假如，除非以……为条件）
7）You will be successful in the interviewonceyou have confidence.（一旦---就--）
,定语从句 篇二
1限定性定语从句She is the student who can speak English well.
2非限定性定语从句She is the student,who can speak English well.
英语八大从句类型总结 篇三
一．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.
It doesn’t interest me whether you succeed or not.
It is in the morning that the murder took place.
It is John that broke the window.
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. (right)
That President Jiang will visit our school next week is said. (wrong)
（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. (right)
That he failed in the examination occurred to him. (wrong)
（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. (right)
Whether he is wrong or not doesn’t matter. (wrong)
（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(right)
Is that will rain in the evening likely(wrong)
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：
1) What you said yesterday is right.
2) That she is still alive is a consolation.
,名词性从句 篇四
1主语从句Whether its right or not remains to be seen.
2宾语从句I wonder whether its right or not.
3同位语从句This is a question whether its right or not.
4表语从句The question is whether its right or not.
．表语从句 篇五
表语从句在复合句中作表语的名词性从句，放在系动词之后，一般结构是“主语＋连系动词＋表语从句”。可以接表语从句的连系动词有be, look, remain, seem等。引导表语从句的that常可省略。另外，常用的还有the reason is that… 和It is because 等结构。例如：
1) The question is whether we can make good preparation in such a short time.
2) This is why we can’t get the support of the people
3) But the fact remains that we are behind the other classes.
4) The reason he is late for school is that he missed the early bus.