1. as...和....样
中间必须用形容词或副词原级。

例如:This classroomis as big as that one.这间教室和那间样大。

He runs as fast as Tom.他和汤姆跑的一样快。

否定结构: not as/so..as,“不如..."。

上面的两个句子可分别改为:
This classroom is not as/so large as that one.这间教室不如哪间大。

He doesn' t run as/so fast as Tom.他跑得不如汤姆快。

2. as soon as ......
用来引导时间状语从句。

若主句是一般将来时,从句要用一般现在时。

例如:
I' lI tell him the plan as soon as I see him.我看到他就告诉他这个计划。

He' |I go home as soon as he finishes his work.他一完成工作就回家。

3. be busy/enjoy/hate/go on/finish doing sth.忙于/喜欢/讨厌/继续/完成做某事在enjoy, finish, hate, go on, be busy等词语后,一般用动词-ing形式作宾语。

例如:
Lin Tao is busy making a model plane.林涛正忙着做飞机模型。

My mother enjoys taking a walk after supper.我妈妈喜欢晚饭后散步。

I hate watching Channel Five.我讨厌看五频道。

When someone asked him to have a rest, he justwent on working.
当有人让他休息一会儿时,他仍继续工作。

I have finished writing the story.我已经写完了故事。

4. fl..with用...装满... ; be filled with充满.... ;be full of充满了....
①be flled with说明由外界事物造成的此种状态,表示被动。

例如:
The box is filled with food.盒子里装满了食物。

②be full of说明主语处于的状态。

此外,还可表示程度，意为“非常”。

例如: The patient' s room is full of flowers.那个病人的房间摆满了花。

The young man is full of pride.那个年轻人非常骄傲。

③这两种结构还可以相互改写。

例如:
I fill the box with food. The box is full of food.
5. be good/bad for有利于/有害....
此句型是: be + adj. +for+n结构。

例如:
Doing morning exercises is good for your health.做早操对你的健康有益。

Always playing computer games is bad for yourstudy.
总玩电脑游戏对你的学习不利
6. be used to(doing) sth.习惯于....
后必须接名词或动名词,可用于现在、过去、将来的多种时态。

be 可用get,become来代替。

例如:
He is used to life in the country.(He is used to livingin the country.)
他习惯于乡村生活。

He will get used to getting up early 他将会习惯于早起。

注意: be used todo的意思是“被用来做...”例如:
Wood is used to make paper.木材被用来造纸。

7. both..and..两者都.....
用来连接两个并列成分;当连接两个并列主语时,其后谓语动词用复数。

例如: Both the students and the teachers will go to theHistory Museum tomorrow.
不论老师还是学生明天都会去历史博物馆。

8. can' t help doing sth.禁不住做某事
help在此的意思是“抑制忍住”, 其后接动词-ing形式。

例如:
His joke is too funny. We can' t help laughing.他的笑话太有趣了, 我们禁不止笑了起来。

9. sth. costs sb. some money某物花费某人多少钱此句型的主语是物。

cost- 词带的是双宾语,它的过去式、过去分词和原型-样。

This book cost me five yuan.这本书花了我五元钱。

10. eiter...不是...，就是... ,或者....或.....
用来连接两个并列成分,当连接并列主语时,谓语动词与邻近的主语保持一致。

You may either stay here or go home.你可以呆在这儿，也可以回家。

Either she or I am right. = Either I or she is right.不是她对就是我对。

11. enough (for sb.) to do sth.足够....做....
在此结构中,for用来引出不定式的逻辑主语。

例如:The ice isn' t thick enough for you to walk on.这冰还没有厚到你可以在上面走的程度。

12. feel like doing sth.想要做某事
此处like为介词,后面跟动词-ing形式。

此句型与wouldlike to do sth.同义。

例如: I feel like drinking a cup of milk.我想喝一杯牛奶。