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.
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.
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.
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.
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.
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.
九、So + 形容词 + be + 主词 + that + 句子 (如此...以致于...)
例句：So precious is time that we can’t afford to waste it.
十、Adj + as + Subject(主词)+ be, S + V~~~ (虽然...)
例句：Rich as our country is, the qualities of our living are by no means satisfactory. {by no means = in no way = on no account 一点也不}
十一、On no account can we + V ~~~ (我们绝对不能...)
例句：On no account can we ignore the value of knowledge.
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 traffic problems.
十三、There is no one but ~~~ (没有人不...)
例句：There is no one but longs to go to college.
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.
十五、It pays to + V ~~~ (...是值得的。)
例句：It pays to help others.
十六、Spare no effort to + V (不遗余力的)
例句：We should spare no effort to beautify our environment.
