中考必考英语语法

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中考越来越近,初三的孩子们也进入紧张的备考阶段。中考中英语占得比重很大,要想考好英语,英语语法一定得牢固掌握。下面是小编给大家带来的中考必考英语语法,欢迎大家阅读参考,我们一起来看看吧!

必考英语语法——after与behind的用法辨析

中考重点语法考前突击(一):after与behind的用法辨析

两者均可表示“在…之后”,其区别是:

1. after 主要用于时间或次序,behind 主要用于位置:

He decided to leave after lunch. 他决定午饭后离开。

Summer comes after spring. 春去夏来。

The hospital is behind the post office. 医院在邮局后面。

【注】behind 有时也用于时间,表示“迟于”,主要用于behind time(迟,晚)这一习语:

The train was 20 minutes behind time. 火车晚点 20 分钟。

2. 两者都可用于引申义,after 侧重指追求、寻找、模仿等;而behind 则侧重指在背后、支持、落后等:

The police are after her. 警察在追捕她。

Many young people are after her. 许多年青人都追求她。

We are behind you completely. 我们完全支持你。

He is behind the others in maths. 他的数学不如别人。

必考英语语法——happen与take place的区别

1).take place 表示“发生、举行、举办”,一般指非偶然性事件的“发生”,即这种事件的发生一定有某种原因或事先的安排,例如:

Great changes have taken place in our hometown during the past ten years.

The Olympic Games of 2008 will take place in Beijing.

(2) .happen作“发生、碰巧”解,一般用于偶然或突发性事件,例如:

What happened to you?(一般不说:What did you happen?)

Maybe something unexpected happened.

I happened to see him on my way home.

= It happened that I saw him on my way home.

注意:happen 与 take place 通常都没有被动语态.

必考英语语法——must和have to的区别

1:must多表示主观需要或责任感的驱使有必要或有义务去做某事,多译为“必须”,而have to多表示客观存在的环境所限,即客观要求(无奈)而为之,多译为“不得不干某事”。

例:I must clean the room because there are too dirty.(无人强迫) 因为太脏了,我必须要打扫房间。

We must be there on time. (责任感的驱使)我们一定准时到达。 I have to do my homework now.(不得不做) 我现在不得不做作业。

I have to leave school because my family is poor now.(无奈) 因为家里穷了,我不得不退学。

区别2:must没有时态的变化,而have to有时态的变化。

例:Daming was hurt. The doctor said he had to stay in hospital for about two weeks. His father has to go to take care of him.

大明受伤了。医生说他大概得住院两周,他的父亲得去照顾他。 We dont have to go to school on Sundays. 星期天我们不必上学。

区别3:must的否定为mustnt, 多表示“禁令”。

例:No!You mustnt turn left! You must turn right into The Strand. 不!你不能向左转!你应该向右转进入到strand中。

由must引起的疑问句,肯定回答要用must或have to,否定回答要用neednt或dont have to,意思是“不必”; 此用法在中考中的单选题中容易出现!

例:1)—Must I finish my homework before eight oclock? —Yes, you must.

我必须要在8点之前完成作业吗? 是的,必须。

2)—Must I attend the meeting?

—No, you neednt/dont have to. You can ask Tom to go instead. 我必须要参加这次会议吗? 不。你不必。你可以让汤姆替你去。


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