一、名词性从句（主从、宾从、表从、同位语从句）

整个句子等于一个名词，整个从句在句子中充当成分。
例子：

It is true that experience and skills can benefit ouy career success.(主语从句)
I believe that experience and skill can benefit our career success.（宾语从句）
The fact is that experience and skills are beneficial to our career success.(表语从句)
We need to take an internship due to the fact that experience and skills are beneficial to our career success.(同位语从句)

这里的that在从句中不做任何成分，只做连接作用。
要和定语从句区分开来，that做成分，叫做关系代词。
在状语从句中，叫做从属连词，不做成份，有一定的意义。

定语从句和同位语从句的区分（看有没有先行词。）：

定语从句：用一个从句去去修饰一个名词，相当于一个形容词，关系代词做成份。
同位语从句：用一个从句来代替一个名词，相当于一个名词，连接词不做成份。

The suggestion that the meeting should be put off proved right.(同位语从句)
The suggestion that he had made proved right.（定语从句）

主语从句连接词的种类：

不缺成分，不缺意思：that
不缺成分，缺意思：whether，if，when，where，why，how
缺成分，缺意思：who，whom，whose，which，whoever，whichever，what（名词+that），whatever

whether he will come is none of my business.（他来不来都和我没关系。）

只有宾语从句的连接词that是可以省略的

二、其他句型（there be、强调句、倒装句）

（1）there be

！！千万不能出现，there be sb do sth，这个语法错误是双谓语！！
两种写法：
（1）there are some body doing ；
（2）there are some body + 从句；

有越来越多的人报考雅思。
There are an incresing number of people studying(!) ielts.
有许多难题应该被弱势群体解决。(disadvantage groups, disadvantage people)
There are many problems that should be solved by disadvantaged people.

(2)强调句

正是设备和基础设施的建设，摧毁了野生动物的栖息地。（habitat，wildlife,facility）
It is the constructions of facilities and infrastrctures that destorys the habitats for wildlife.
It is the habitats for wildlife that have destoried by the constructions of the facilities and infrastrctures.(被动)
It is the habitat for wild animals that the building of facilities and infrastrctures has destoried.(主动)

强调句的结构：
（1）it is + 强调部分 + that + 剩余部分。
把it is ……that 去掉之后仍然正确。
（2）it is + 强调部分 + who + 剩余部分。

就是那个猥琐的中年男人偷了我的车。(steal - stole)
It was the wretched and middle-aged man who stole my car.

（3）倒装句

可分为全部倒装和部分倒装。不要求写倒装，除非你很强哦。
-政府应该不仅举行活动来推动回收，也可以发布限制工厂排放的法律(launch campaigns)
The government should not only launch compaigns to promote recycling, but also introduce law to limit the emssion from companies.
Should not only the goverment launch compaigns to promote recycling, but also introduce law to limit the emssion from companies.