例句：Helen is the most beautiful girl that I have ever seen.
Mr. Zhang 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.
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.