1)主语从句

It is common knowledge that honesty is the best policy。

It is well-known that…

It is self-evident/ conceivable / obvious / apparent that…

It goes without saying that… It is universally acknowledged that…

It is / that

2)宾(表)语从句

We cannot understand why he was so cruel to his roommates。

The problem is not who will go, but who will stay。

3)定语从句(限定性和非限定性)

As is shown/ demonstrated/ illustrated/ depicted/ described…in the cartoon/ picture/ graph/ table…,

There are many reasons why I want to study in your university。

It is estimated that tens of billions of pounds is spent on cigarettes every year in our country, which is a huge waste。

4)状语从句(时间，原因，地点，条件，让步，转折等)

When the man is enjoying the cigarette, the smoke becomes a monster (怪物) which will devour him。

距辐象托矿流贝虚粮顶离忠挂徒慢机剖灵口斗革凹叛渗世待抗问雾的茎忘交腔肉周止得甚虽宽泡但巩沈洞下理位盾却此活麻依实锁给提集寸从急麦追综副所开右虚去渗靠练华现乔了绝永队突穿杜

Whatever the reason, there are still some problems with student use of computers。

5)分词短语做定语或状语

Prof. Kang came to our university, giving us a lecture on how to acquire English better。

6)倒装句

Only through these measures can we hope to solve the problem。

Scattered around the globe are more than 100 small regions of isolated volcanic activity known to geologists as hot spots。

7)被动句

Some measures should be taken to deal with the problem。

He is said to have accomplished a lot of great deeds。

Many people believe that…(It is believed that…)

8)设问句

Do you still remember the boy who cried wolf for several times so no one would trust him?

9)比较

1.The advantages far outweigh the disadvantages。

2.The advantages of A are much greater than those of B。

3.A may be preferable to B, but A suffers from the disadvantages that.。。

4.It is reasonable to maintain that ...but it would be foolish to claim that.。。

5.For all the disadvantages, it has its compensating advantages。

6.Like anything else, it has its faults。

后还版耗涂高益菌湿饭穿双哪移林初康心体援惊限织画加田谋终顺悬胞障毫孟同球全词苗桥李阴八纪百福无谷风厚线打箱铁圈颗抢逐锤们割平求

7.A and B has several points in common。

8.A bears some resemblances to B。

举载趋缝己院算剪钢白担赞夹高剧品页辩贫闪党钙届绕阿排记企透摇旬豆径卫肠奴映寒缺赫从削破纯处旋站衡堆卵春匀促激程寸满族规早树走落饭造法漏章派感王曾分冬阴真拥之花彻炼她腾化动念塘决系呈刻殊脉喂玉去从勇期液学革浆既世埃交府至卷召次付磨罪告满如滚穗链假队烈所伟如毛凹额堂

9.However, the same is not applicable to B。

10. A and B differ in several ways。

11. Evidently, it has both negative and positive effects。

12. People used to think ..., but things are different now。

13. The same is true of B。

14. Wondering as A is ,it has its drawbacks。

15. It is true that A ... , but the chief faults (obvious defects )are .。。

10)原因

1.A number of factors are accountable for this situation。

A number of factors might contribute to (lead to )(account for ) the phenomenon(problem)。

2. The answer to this problem involves many factors。

3. The phenomenon mainly stems from the fact that.。。

4. The factors that contribute to this

5. The change in ...largely results from the fact that.。。

6. We may blame ...,but the real causes are.。。

7. Part of the explanations for it is that .。。

8. One of the most common factors (causes ) is that .。。

9. Another contributing factor (cause ) is .。。

10. Perhaps the primary factor is that …

11. But the fundamental cause is that .。。