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一、~~~ the + ~ est + 名词 + + 主词 + have ever + seen ~~~ the most + 形容词 + 名词 + + 主词 + have ever + seen 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. 例句：We cannot emphasize the importance of protecting our eyes too much. 四、There is no denying that + S + V ... 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~~ 例句：It is universally acknowledged that trees are indispensable to us. 六、There is no doubt that + 句子~~ 例句：There is no doubt that our educational system leaves something to be desired. 七、An advantage of ~~~ is that + 句子 例句：An advantage of using the solar energy is that it wont create any pollution. 八、The reason why + 句子 ~~~ is that + 句子 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 | 
