1. as…as 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/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.
这间教室不如那间大。
He doesn’t 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:
I’ll tell him the plan as soon as I see him.
我一看到他就告诉他这个计划。
He’ll 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. fill…with 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 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 thecountry.)
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。
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