一、~~~ the + ~ est + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
~~~ the 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.
二、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.
三、~~~ 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. 我们再怎么强调保护眼睛的重要性也不为过。
四、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 worse. 不可否认的，我们的生活品质已经每况愈下。
五、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.
六、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. 毫无疑问的我们的教育制度令人不满意。
七、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 pollution. 使用太阳能的优点是它不会制造任何污染。
八、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 for us. 我们必须种树的原因是它们能供应我们新鲜的空气。
九、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.
十 、By +Ving, ~~ can ~~ (借着...，..能够..)
例句：By taking exercise, we can always stay healthy.
十一、~~~ enable + Object(受词)+ to + V (..使..能够..)
例句：Listening to music enable us to feel relaxed.
十二、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 the trafficproblems. 该是有关当局采取适当的措施来解决交通问题的时候了。
十三、Those who ~~~ (...的人...)
例句：Those who violate traffic regulations should be punished.
十四、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. 既然考试迫在眉睫，我不得不放弃做运动。
十五、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 life. 可想而知，知识在我们的一生中扮演一个重要的角色。
十六、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. 夏天很燠热。那就是我不喜欢它的原因。
十七、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.自从他上高中，他一直很用功。
十八、be based on (以...为基础)
例句：The progress of the society is based on harmony.
十九、be closely related to ~~ (与...息息相关)
例句：Taking exercise is closely related to health.
二十、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.
二十一、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!
二十二、Leave much to be desired (令人不满意)
例句：The condition of our traffic leaves much to be desired.
二十三、Have a great influence on ~~~ (对...有很大的影响)
例句：Smoking has a great influence on our health.
二十四、do good to (对...有益)，do harm to (对...有害)
例句：Reading does good to our mind.读书对心灵有益。
Overwork does harm to health.工作过度对健康有害。
二十五、Pose a great threat to ~~ (对...造成一大威胁)
例句：Pollution poses a great threat to our existence.
二十六、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.