一、开头句型1.As far as .is concerned2.It goes without saying that.3.It can be said with certainty that.4.As the proverb says，5.It has to be noticed that.6.Its generally recognized that.7.Its likely that .8.Its hardly that.9.Its hardly too much to say that.10.What calls for special attention is that.需要特别注意的是11.Theres no denying the fact that.毫无疑问，无可否认12.Nothing is more important than the fact that.13.whats far more important is that.二、衔接句型A case in point is .As is often the case.As stated in the previous paragraph 如前段所述But the problem is not so simple. Therefore 然而问题并非如此简单，所以But its a pity that.For all that.In spite of the fact that.Further, we hold opinion that.However , the difficulty lies in.Similarly, we should pay attention to.not(that).but(that).不是，而是In view of the present station.鉴于目前形势As has been mentioned above.In this respect, we may as well (say) 从这个角度上我们可以说However, we have to look at the other side of the coin, that is. 然而我们还得看到事物的另一方面，即 三、结尾句型I will conclude by saying.Therefore, we have the reason to believe that.All things considered,总而言之It may be safely said that.Therefore, in my opinion, its more advisable.From what has been discussed above, we may safely draw the conclusion that.The data/statistics/figures lead us to the conclusion that.It can be concluded from the discussion that.从中我们可以得出这样的结论From my point of view, it would be better if.在我看来也许更好四、举例句型Lets take.to illustrate this.试举例以兹证明lets take the above chart as an example toillustrate this.Here is one more example.Take for example.The same is true of.This offers a typical instance of.We may quote a common example of.Just think of.五、常用于引言段的句型1. Some people think that . To be frank, I can not agree with their opinion for the reasons below.2. For years, has been seen as , but things are quite different now.3. I believe the title statement is valid because.4. I cannot entirely agree with the idea that . I believe.5. My argument for this view goes as follows.6. Along with the development of, more and more.7. There is a long-running debate as to whether.8. It is commonly/generally/widely/ believed /held/accepted/recognized that.9. As far as I am concerned, I completely agree with the former/ the latter.10. Before giving my opinion, I think it is essential to look at the argument of both sides.六、表示比较和对比的常用句型和表达法1. A is completely / totally / entirely different from B.2. A and B are different in some/every way / respect / aspect.3. A and B differ in.4. A differs from B in.5. The difference between A and B is/lies in/exists in.6. Compared with/In contrast to/Unlike A, B.7. A, on the other hand,/in contrast,/while/whereas B.8. While it is generally believed that A , I believe B.9. Despite their similarities, A and B are also different.10. Both A and B . However, A; on the other hand, B.11. The most striking difference is that A, while B.七、演绎法常用的句型1. There are several reasons for, but in general, they come down to three major ones.2. There are many factors that may account for, but the following are the most typical ones.3. Many ways can contribute to solving this problem, but the following ones may be most effective.4. Generally, the advantages can be listed as follows.5. The reasons are as follows.八、因果推理法常用句型1. Because/Since we read the book, we have learned a lot.2. If we read the book, we would learn a lot.3. We read the book; as a result / therefore / thus / hence / consequently / for this reason / because of this, weve learned a lot.4. As a result of /Because of/Due to/Owing to reading the book, weve learned a lot.5. The cause of/reason for/overweight is eating too much.6. Overweight is caused by/due to/because of eating too much.7. The effect/consequence/result of eating too much is overweight.8. Eating too much causes/results in/leads to overweight.定语从句是高中英语学习的重要语法项目之一，在高考各个题型中都有可能会涉及。它的结构和用法比较复杂，是高中阶段英语学习的一个重点。一、关系代词用that，which引导的定语从句1.通常只用that的情况当先行词为all, few, little, much, anything, nothing, everything, none等时；或者当先行词被序数词、形容词的最高级和 all, any, few, little, no, the only, the very, the last 等词修饰时，定语从句的关系代词要用that；如果定语从句修饰两个先行词，其中一个指人，一个指物，那么定语从句的关系代词也应用that。2.通常只用which的情况 当引导非限制性定语从句，指物或指代前面整个句子的内容,或放在介词后面指物时，只能用which。I refuse to accept the blame for something that was someone elses fault.After graduating from college, I took some time off to go travelling, which turned out to be a wise decision. 二、who，whom，whose引导的定语从句1.如果先行词是指人的不定代词，如：anyone, anybody, everyone, everybody, someone, somebody, nobody, one, ones, those, all等，关系代词在定语从句中作主语时用who，作宾语时用whom/who。2.在非限制性定语从句中，关系代词指人且作主语时用who，作宾语时用whom/who。3.在定语从句中可以作定语的关系代词只有whose，表示物时相当于the + 名词 + of + which或of + which + the + 名词；表示人时相当于the + 名词 + of + whom或of +whom + the + 名词。I