内容正文:
Unit 2 I'll help to clean up the city parks.
八年级下册英语(人教版)
单元语法专题—Grammar Focus
在英语中,有些动词通过在后面加上介词、副词或其他词表达特定含义,这样的短语称为短语动词,其作用和动词差不多。有些短语动词相当于及物动词,有些则相当于不及物动词。短语动词的构成主要有以下几种形式:
►动词+介词
常见的有ask for,agree with,begin with,call on,care about,deal with,laugh at,take after,work on等。这类短语动词的宾语放在介词后。如:
We have to look after ourselves when we are away from home.
►动词+副词
常见的有cheer up,clean up,fix up,give up,look up,hand in,take off,turn on/off/up/down等。这些短语动词的宾语是名词时,置于副词前后均可;若宾语是代词,则只能置于动词和副词之间。如:
Turn off the light, please./Turn the light off, please.
She looks really upset.Let's cheer her up.
►动词+副词+介词
常见的有catch/keep up with,come up with,do well
in,get on/along with,look forward to,run out of,stay away from等。这类短语动词的宾语只能放在介词后。如:
What if you run out of all your pocket money?
►动词+名词+介词
常见的有make fun of,make use of,pay attention to,take care of,take part in,take pride in等。这类短语动词的宾语只能放在介词后。如:
You must pay attention to your spelling.
►be动词+形容词+介词
My sister is good at dancing.
1.动词不定式的结构
动词不定式由“to+动词原形”构成,没有人称和数的变化,在句子中不能单独作谓语。动词不定式的肯定形式是to do sth.,否定形式是not to do sth.。
2.动词不定式的功能
动词不定式具有名词、形容词和副词的特征,因此在句中可作主语、宾语、宾语补足语、定语和状语等。如:
I want to go shopping with you.
I have something important to tell you.
She got up early to catch the train.
一、用括号内所给单词的适当形式填空。
1.Don't forget ____________ (lock) the door when you leave.
2.Would you like ___________ (go) and have a picnic with us tomorrow?
3.I often hear the girl _________ (play) the piano in the next room.
4.Can we _________ (put) off the meeting till next Monday morning?
5.Would you please __________ (give) out the exam papers?
to lock
to go
play
put
give
二、单项选择。
6.(成都中考)Our English teacher wants us _______ English stories out of class.
A.read B.reading C.to read
7.(河南中考)The boss asked Tim to go and _______ out if there was anyone else absent.
A.find B.finding C.to find D.found
C
A
8.She came here ________ her grandparents.
A.visit B.to visit C.visiting D.visited
9.(导学号:38274010)(济宁中考)Xiong'an New Area w