考研英語一直都是很多考生比較頭疼的一門科目，很多人復習起來也無從下手。為此，小編就整理出英語常考的比較級句式，方便大家的復習和積累。
1、"not...but..."的固定句式
[例句] Their methods do not attempt to estimate the actual biomass (the amount of livingbiological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time.
[譯文] 他們的方法并不是試圖估計海洋特定區域魚類物種的實際生物量(活的生物物種數量)，而是生物量隨著時間的變化。
[例句] The astonishing distrust of the news media isn't rooted in inaccuracy or poor reportorial skills but in the daily clash of world views between reporters and their readers.
[例句] "The test of any democratic society," he wrote in a Wall Street Journalcolumn, "lies not in how well it can control expression but in whether it gives freedom of thought and expression the widest possible latitude, however disputable or irritating the results may sometimes be.
[譯文] 他在《華爾街日報》的一個專欄中寫道：“對任何民主社會的檢驗不在于它能多好地控制言論的表達，而在于它是否賦予思想和表達自由盡可能寬松的限度，不管結果有時會是多么有爭議或令人不悅。
[例句] Acomparison of British geological publications over the last century and a half reveals not simply an increasing emphasis on the primacy of research, but also a changing definition of what constitutes an acceptable research paper.
2、"there be..."的固定句式
[例句] And there are long, variable lags before policy changes have any effect on the economy.
[譯文] 而且在政策改變對經濟產生任何影響之前，有長時間的、變化無常的滯后期。
[例句] And thanks to the continual miniaturization of electronics and micro-mechanics, there are already robot systems that can perform some kinds of brain and bone surgery with sub-millimeter accuracy - far greater precision than highly skilled physicians can achieve with their hands alone.
3、強調句
(1)"it is... that..."的固定句式
[例句] Perhaps it is humankind’s long suffering at the mercy of flood and drought that makes the idea of forcing the waters to do our bidding so fascinating.
[譯文] 也許正是人類長期承受洪水和干旱控制下的折磨，使駕馭洪水的想法特別令人癡迷。
(2)"it is…who…”的固定句式
[例句] It is the playgoers, the RSC contends, who bring in much of the town's revenuebecause they spend the night (some of them four or five nights) pouring cash into the hotels and restaurants.
[例句] In an odd way, however, it is the educated who have claimed to have given up onambition as an ideal.
[譯文] 然而奇怪的是，正是這些受過教育的人們宣稱他們已經放棄把雄心壯志作為理想。
4、祈使句
(1)一般祈使句
[例句] Visualize how you would like it to end instead; the next time it occurs, try to wake up just enough to control its course.
[例句] Often it is the delivery which causes the audience to smile, so speak slowly and remember that a raised eyebrow or an unbelieving look may help to show that you are making a light-hearted remark.
[譯文] 通常是說話的方式使聽眾發笑，因此說慢一些，并且記住揚揚眉毛或者使用一種無法相信的神情都會向人們顯示你正在說笑話。
(2)特殊祈使句(祈使句+and+主謂結構)
[例句] Step outside and you could break a leg slipping on your doormat.
[例句] Light up stove and you could burn down the house.
5、"...so that... ”的固定句式
[例句] If you feel awkward being humorous, you must practice so that it becomes more natural, include a few casual and apparently off-the-cuff remarks which you can deliver in a relaxed and unforced manner.
[譯文] 如果你在幽默時感到很別扭，你應該進行練習以便幽默變得更自然。插入一些很隨便的看上去是即興的話，你能夠用輕松的、不做作的方式把它們說出來。
[例句] In Europe, taxes account for up to four-fifths of the retail price, so even quite big changes in the price of crude have a more muted effect on pump prices thanin the past. (2002-3-3)
6、介詞“with”引導的獨立主格結構
[例句] With the risks obvious and growing, a prudent people would take out an insurance policy now.
英語的高分秘訣就在于平時的積累，每天都要花一定的時間用在英語詞匯上，相信英語會取得理想分數，大家加油。