1.asas 和一样
中间必须用形容词或副词原级。例如：
This classroom is as big as that one.
这间教室和那间一样大。
He runs as fast as Tom. 他和汤姆跑的一样快。
否定结构：not as/soas,不如。上面的两个句子可分别改为：
This classroom is not as/so large as that one.
这间教室不如那间大。
He doesnt run as/so fast as Tom.
他跑得不如汤姆快。
2.as soon as 一就
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：
Ill tell him the plan as soon as I see him.
我一看到他就告诉他这个计划。
Hell 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 just went 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.fillwith 用装满......; be filled with 充满了be full of 充满了......
①be filled 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 patients 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/有害于
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 your study.
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 living in 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 to do 的意思是被用来做。例如：
Wood is used to make paper.
木材被用来造纸。
7.bothand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 the History Museum tomorrow.
不论老师还是学生明天都会去历史博物馆。
8.cant 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 cant 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一词带的是双宾语，它的过去式、过去分词和原型一样。
This book cost me five yuan.
这本书花了我五元钱。
10.eitheror 不是就是,或者或者
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。