1.~~~ 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. 海伦是我所看过最美丽的女孩。
ing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V
例句：Nothing is more important than to receive education. 没有比接受教育更重要的事。
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. 我们再怎么强调保护眼睛的重要性也不为过。
e 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。
is universally acknowledged that + 句子~~ (全世界都知道……)
例句：It is universally acknowledged that trees are indispensable to us. 全世界都知道树木对我们是不可或缺的.。
e 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。
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。
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。
+ 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. 时间是如此珍贵，我们经不起浪费它。
+ 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} 虽然我们的国家富有，我们的生活品质绝对令人不满意。
+ ~er + S + V， ~~~ the + ~er + S + V ~~~The + morre + Adj + S + V， ~~~ the + more + Adj + S + V ~~~(愈……愈……)
例句：The harder you work， the more progress you make. 你愈努力，你愈进步。
学识谷
