13.It gives rise to (lead to / bring /create) a host of problems (consequences)。

　　14.There are numerous reasons why…, and I shall here explore only a few of the most important ones。

　　15.It will exert (have / produce) profound (far-reaching / remarkable / considerable / beneficial / favorable / undesirable / disastrous) effect (influence) on…。

　　16.A multitude of factors could account for (contribute to / lead to / result in / influence) the change (increase / decrease / success / failure / development) in…。

　　17.In 2000, it increased (rose / jumped / shot up) from 5 to 10 percent of the total (to 15 percent / by 15 percent)。

　　18.By comparison with 2002, it decreased (dropped / fell) from 10 to 5 percent (to 15 percent / by 15 percent)。

　　19.It accounts for 15 percent of the total。

　　20.There were 100 traffic accidents in April, an increase of 5 percent in a five-month period。

　　21.By 2002, only (less than / more than / almost / about / over/ as many as) three quarters (40 percent of / one out of five / one in four) college population (graduates / housewives) as against (as compared with) last year (2002) preferred to (liked)…。

　　22.With the development (improvement / rise / growth / general recognition / acknowledgement / realization) of…, vast changes awaits this country’s society。

　　23.Now people in growing (ever-increasing / significant) numbers are beginning (coming / getting) to believe (realize / recognize / understand / accept / see / be aware) that…。

　　24.According to a(n) recent (new / official) study (survey / report / poll)，…。

　　25.History (Our society) is filled (abounds) with the examples of…。

　　26.The story (case / instance / situation) is not rare (isolated / unique)， it is one of many examples (typical of dozens)。

　　27.A (one) recent (new / general / nationwide) study (survey / poll / investigation) conducted (taken) at a university by (officials / scientists / experts) indicates (reveals / suggests / shows / proves / demonstrates) that…。

　　28.According to (As can be seen in / As is shown in) the figures (statistics / findings / data / graph / table) released (provided) by the government (an institute)， it can be learned (seen / predicted) that…。

　　29.There is (no) good (every / little / sufficient / considerable / strong) evidence (proof) to

　　30.Personal experience (Examples I heard / read of) leads me to conclude that…。

　　31.We must admit the undeniable fact that…。

　　32.No one can deny (ignore / doubt / overlook / obscure / brush aside) the fact that…。

　　33.Experience (Evidence) suggests (shows) that…。

　　34.Take for example…who (that)…。

　　35.The same is true of…。

　　36.As the saying goes,“…。”

　　三、结尾段

　　结尾段的核心句型：

　　1.From what has been discussed above (Taking into account all these factors / Judging from all evidence offered)， we may safely draw (reach / come to / arrive at) the conclusion that…。

　　2.All the evidence (analysis) supports (justifies / confirms / warrants / points to) a(n) unshakable (unmistakable / sound / just) conclusion that…。

　　3.It is high time that we place (lay / put) great (special / considerable) emphasis on the improvement (development / increase / promotion) of…。

　　4.It is high time that we put an end to the deep-seated (unhealthy / undesirable / deplorable) situation (tendency / phenomenon) of…。

　　5.We must look (search / call / cry) for an immediate action (method / measure)， because the present (current) situation (phenomenon / tendency / state / attitude) of…, if permitted (allowed) to continue (proceed)， will surely (certainly) lead to (result in) the end (destruction / heavy cost) of…。

　　6.There is no easy (immediate / effective) solution (approach / answer / remedy) to the problem of…, but…might be useful (helpful / beneficial)。

　　7.No easy method (solution / recipe / remedy) can be at hand (found / guaranteed) to solve (resolve / tackle) the problem of…, but the common (general / public) recognition of (realization of / awareness of / commitment to) the necessity (importance / significance) of…might be the first step towards change (on the right way / in the right direction)。

　　8.Following these methods (suggestions) may not guarantee the success in (solution to)…, but the pay-off will be worth the effort。

　　9.Obviously (Clearly / No doubt)， if we ignore (are blind to) the problem, there is every chance that…。

　　10.Unless there is a common realization of (general commitment to)…, it is very likely (the chances are good) that…。

　　11.There is little doubt (no denying) that serious (special / adequate / immediate / further) attention must be called (paid / devoted) to the problem of…。

　　12.It is necessary (essential / fundamental) that effective (quick / proper) action (steps /measures / remedies) should be taken to prevent (correct /check / end / fight) the situation (tendency / phenomenon)。

　　13.It is hoped (suggested / recommended) that great (continuous / persistent / sustained / corporate) efforts should be made to control (check/ halt / promote) the growth (increase / rise) of…。

　　14.It is hoped that great efforts should be directed to (expended on / focused on) finding (developing / improving)…。

　　15.It remains to be seen whether…, but the prospect (outlook) is not quite encouraging (that rosy)。

　　16.Anyhow, wider (more) education (publicity) should be given to the possible (potential / grave /serious / pernicious) consequences (effects) of…。

　　17.To reverse (check / control) the trend (tendency) is not a light task (an easy job)， and it requires (demands / involves / entails) a different state of mind towards (attitude towards / outlook on)…。

　　18.For these reasons, I strongly recommend that…。

　　19.For the reasons given above, I feel that…。

　　四、段落扩展中的常用词语

　　1、总结关系过渡词语

　　generally speaking, generally, as a general rule, in general, on a larger scale, to take the idea further, to take the above opinion to an extreme, in a sense, in one sense, in a way, to some extent, in my opinion, in my view, as for me, as far as I am concerned, obviously, undoubtedly, in terms of, in conclusion, in short, in brief, in summary, in a word, on the whole, to sum up, to conclude

　　2、比较对比关系过渡词语

　　similarly, likewise, like, too, equally important, the same as, in common, in the same way, on the contrary, on the one hand, on the other hand, otherwise, in sharp contrast, whereas, rather than, conversely, instead, in/by contrast, but, however, yet, nevertheless

　　3、列举关系过渡词语

　　for example, for instance, as an example, as a case in point, such as, namely, that is, like, thus, first, second, third, finally, in the first place, initially, first of all, to begin with, to start with, what is more, furthermore, eventually, besides, in addition (to that)， first and foremost, last but not least, next, also, moreover, for one thing, for another

　　4、因果关系过渡词语

　　because (of)， as, since, for, owing to, due to, thanks to, on account of, as a result of, result in (from)， consequently, for the reason that, as a consequence, consequently, if follows that, accordingly, therefore, hence

　　5、让步关系过渡词语

　　although, even though, after all, in spite of, despite, granted that

　　6、强调关系过渡词语

　　anyway, certainly, surely, obviously, to be sure, especially, particularly, above all, in deed, in fact, even worse, needless to say, most important of all, no doubt