1.the + ~ est /(most+形容词)+ 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
例句：Helen is the most beautiful girl that I have ever seen.
Mr. Chang is the kindest teacher that I have ever had.
2.Nothing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V
例句：Nothing is more important than to receive education.
3. ~~~ cannot emphasize the importance of ~~~ too much.(再怎么强调...的重要性也不为过。)
例句：We cannot emphasize the importance of protecting our eyes too much.
4. There is no denying that + S + V ...(不可否认的...)
例句：There is no denying that the qualities of our living have gone from bad to
5.It is universally acknowledged that + 句子~~ (全世界都知道...)
例句：It is universally acknowledged that trees are indispensable to us.
6.There is no doubt that + 句子~~ (毫无疑问的...)
例句：There is no doubt that our educational system leaves something to be desired.
7.An advantage of ~~~ is that + 句子 (...的优点是...)
例句：An advantage of using the solar energy is that it won’t create (produce) any
8.The reason why + 句子 ~~~ is that + 句子 (...的原因是...)
例句：The reason why we have to grow trees is that they can provide us with fresh
air./ The reason why we have to grow trees is that they can supply fresh air
9.The + ~er + S + V, ~~~ the + ~er + S + V ~~~
The + more + Adj + S + V, ~~~ the + more + Adj + S + V ~~~(愈...愈...)
例句：The harder you work, the more progress you make.
The more books we read, the more learned we become.
10.By +Ving, ~~ can ~~ (借着...，..能够..)
例句：By taking exercise, we can always stay healthy.
11.~~~ enable + Object(受词)+ to + V (..使..能够..)
例句：Listening to music enable us to feel relaxed.
12.It is time + S + 过去式 (该是...的时候了)
例句：It is time the authorities concerned took proper steps to solve
13.Those who ~~~ (...的人...)
例句：Those who violate traffic regulations should be punished.
14.be + forced/compelled/obliged + to + V (不得不...)
例句：Since the examination is around the corner, I am compelled to
give up doing sports.
15.It is conceivable that + 句子 (可想而知的)
It is obvious that + 句子 (明显的)
It is apparent that + 句子 (显然的)
例句：It is conceivable that knowledge plays an important role in our
16.That is the reason why ~~~ (那就是...的原因)
例句：Summer is sultry. That is the reason why I don’t like it.
17.Since + S + 过去式，S + 现在完成式。
例句：Since he went to senior high school, he has worked very hard.
18.be based on (以...为基础)
例句：The progress of the society is based on harmony.
19.be closely related to ~~ (与...息息相关)
例句：Taking exercise is closely related to health.
20.Get into the habit of + Ving = make it a rule to + V (养成...的习惯)
例句：We should get into the habit of keeping good hours.
21.What a + Adj + N + S + V! = How + Adj + a + N + V!(多么...!)
例句：What an important thing it is to keep our promise!
How important a thing it is to keep our promise!
22.Leave much to be desired (令人不满意)
例句：The condition of our traffic leaves much to be desired.
23.Have a great influence on ~~~ (对...有很大的影响)
例句：Smoking has a great influence on our health.
24.do good to (对...有益)，do harm to (对...有害)
例句：Reading does good to our mind.
Overwork does harm to health.
25.Pose a great threat to ~~ (对...造成一大威胁)
例句：Pollution poses a great threat to our existence.
26.do one’s utmost to + V = do one’s best (尽全力去...)
例句：We should do our utmost to achieve our goal in life.