1)It is+形容词+that

　　It is conceivable that knowledge plays an important role in our life.

　　可想而知，知识在我们的一生中扮演着一个重要的角色。

　　2)It is+形容词+to do/ doing

　　She had said what it was necessary to say.

　　她已经说了一切有必要说的话。

　　3)祈使句/名词+and/ or

　　Work hard, and you will finally be able to reach your destination.

　　努力工作，你就能实现自己的目标。

　　4)as+many/ much+名词+as

　　It is said that visitors spend only half as much money in a day in Leeds as in Lon-don.

　　据说，游客每天在利兹的花销仅为在伦敦的一半。

　　5)倍数词+as+形容词+as

　　The reservoir is three times as big as it was ten years ago.

　　这个水库的面积是十年前三倍。

　　6) 倍数词+ more +名词/形容词十than

　　Smoking is so harmful to personal health that it kills seven times more people each year than automobile accidents.

　　吸烟对人体健康的危害极大，每年死于吸烟的人比死于车祸的人多七倍。

　　7)(not)as/ so...as(和……(不)一样)

　　The environmental problems are not as serious as they suggested in their report.

　　环境问题没有他们在报告中说得那么严重。

　　8)no more...than(与……一样不)

　　She is no more fit to be a manager than a schoolgirl would be

　　一个女学生固然不宜当经理，她也同样不宜。

　　9)Nothing is more...than(没有比……更……的;……是最……的)

　　Nothing is more important thanto receive education.

　　没有比接受教育更重要的事。

　　10)感官动词+of+名词

　　They hurriedly escaped into a cave that smelt of terror.

　　他们仓皇地逃人一个充满恐怖气氛的山洞。

　　11)without/ not so much as(甚至没有)

　　Disappointed with her husband，Mary left home without so much as looking back at him.

　　出于对丈夫的失望，玛丽离开了家，甚至都没有回头看他一眼。

　　12)may/ might as well(…as)(与其……还不如……)

　　One may as well not know a thing at all as know but imperfectly.

　　与其一知半解还不如彻底蒙在鼓里。

　　13)too...to(太……而不能……;极其地)

　　It was not too bright of them to settle in an area where earthquakes frequently occur

　　他们选择在地震多发的地区定居，这可不是个明智的决定。

　　14)only to find/ see(结果却;没想到会)

　　He spent almost all his money to buy the hen which was said to be able to lay gold eggs, only to find it could not lay eggs at all.

　　为了买那只据说能下金蛋的母鸡，他几乎倾家荡产，没想到这只鸡根本不会下蛋。