表达相同，相似：
Pete‘s hair is shorter than mine.
I am odd，but Pete is odder.However, Max is the oddest.
I am as strong as Pete.
Pete and I are alike in the taste of design.
There is no difference between modifying or recreating it.
Pete's underwear’s color is the same as mine.
用一些副词来描述不同的程度：
Pete is much older than me.And I am a little older than Sam.
Pete is definitely the coolest guy I've seen.
when while 引导的时间状语从句
While Bobo was watching TV,I was studying English.
表达一段时间，后面跟进行时，且能持续的动作。When I finished my work，I went to study English.
表达一个时间点后，另一事情接着发生。I wanted to be a football star,when I was a child.
参考 http://xzf.2000y.net/mb/2/ReadNews.asp?NewsID=536010其他：
1.comparing thing
2.some useful sentence in face2face class
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