一、 … the +形容词最高级 + 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.
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.