谁能解释一下“让步状语从句”和“比较状语从句”?

谁能解释一下“让步状语从句”和“比较状语从句”?

让步状语从句
要点:表示让步的状语从句由连词 though,although引导.
难点：
lthough,although当虽然讲,都不能和but连用.Although,(though)…but的格式是不对的.但是他们都可以同yet (still) 连用.所以thought (although)…yet(still)的格式是正确的.
lWrong:Although he is rich but he is not happy.
Right :Although he is rich,yet he is not happy.
虽然他很富有,然而他并不快乐.
lRight :Although we have grown up,our parents treat us as children.
Right :Although we have grown up,our parents still treat us as children.
尽管我们已经长大了,可是我们的父母仍把我们看作小孩.
although,though 辨析
although 不能though 那样用作副词,放在句末表示强调时要用even though.
lHe is looking fit,though.
但是,他看上去很健康.考点
lEven though I didn’t under a word,I kept smiling.
尽管我一个字也不懂,我还是一直微笑着.
lHe is quite experienced,he is young,though.
尽管他很年轻,他很有经验.
比较状语从句
要点：比较状语从句主要运用于形容词和副词的原级,比较级及最高级的句子之中.
原级
1.as…as 和.一样
Jack is as tall as Bob.
捷克和汤姆一样高.
2.not so(as)…as …和不一样
She is not so(as)outgoing as her sister.
她不如她姐姐外向.
比较级
more…than (更)
This book is more instructive than that one.
这本书比那本书由教育意义.
最高级
1.The most…in/of
This book is the most interesting of the three.
这本书是三本中最有趣的.
2.the + 形容词+est…of/in
This road is the busiest street in our city.
这条路是我们城市最繁忙的街道.
知识扩展
lno more than只不过(嫌少的意思)
I have no more than two pens.
我只有两支笔.
It’s no more than a mile to the shops.
去商店不过一英里.
lnot more than不如.；(前者不如后者)
Jack is not more diligent than John.
捷克不如约翰勤奋.
lone of the + 名词(复数)….之一(用于最高级)
Han Mei is one of the best students in our school.
韩梅是我们学校最好的学生之一.