内容正文:
8B Unit1 Helping those in need 语法课
Grammar:动词不定式
动词不定式由“to+动词原形”构成,有时可以不带to。它没有人称和数的变化,其否定式是在to前加上not。它在句中可作宾语、宾语补足语和状语等。具体用法见下表:
用法
例句
作宾语
offer, plan, hope, choose, refuse, decide, learn, wish等动词之后作宾语:
Finally he offered to go shopping with me. 最后他主动提出跟我一起购物。
I have decided not to think about it. 我已决定不去想它。
我们也可以在know.decide,learn和remember等动词之后用“疑问词+动词不定式”作宾语
I don't want to stay at home, but I don't know where to go.
我不想呆在家里,但是我不知道去哪里
作宾语补足语
teach,ask,allow,invite,order,advise等动词之后用不定式作宾补:
You should ask him to turn off the light. 你应该要求他关掉灯。
My parents allow me to play computer games at weekends.
我父母允许我周末玩电脑游戏。
let,make和have之后用省略to的不定式:
My mother often makes me clean the windows.
我妈妈常常让我擦窗户。
作状语
动词不定式表示目的。
They are working hard to save the injured tiger.
他们正在努力工作营救那只受伤的老虎。
【基础知识巩固训练】
1. The workers want us ______ together with them.
A. work B. working C. to work D. worked
2. There isn’t any difference between the two. I rea