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2017年公共英语四级考试语法解析

2017年上半年公共英语考试已开始复习,为了帮助广大考生更好备考2017年PETS-4考试,下面是yjbys网小编提供给大家关于公共英语四级考试语法解析,希望对大家的备考有所帮助。

2017年公共英语四级考试语法解析

复合句

复合句考查的主要内容是宾语从句、状语从句和定语从句。

①宾语从句

宾语从句的考查要点是:时态的呼应、人称的一致、词序等。

A.宾语从句的连接词:宾语从句本身是叙述句是,用that 引导。He said (that) he would leave on March 12 next weeek.宾语从句本身是特殊疑问句时,用疑问词引导。 Do you know where we can find our teacher?宾语从句本身是一般疑问句时,用if 或whether引导。I don’t know if / whether he has done that.

B. 宾语从句与主句时态的呼应。主句谓语是现在时和将来时的时候,宾语从句的动词时态不受影响。如,It is said that the panda was sent to America last month.主句是过去时态,从句谓语要做适当调整:

a)由现在时调整为过去时。I didn’t know you were also here.

b)由将来时调整为过去将来时He said that he would go to Beijing the next week.

c)过去时态多数不受影响,但“一般过去时”常调整为“过去完成时”,尤其是从句中有before, since 一类的时间状语时,多调整为“过去完成时”如:She said she had worked at this school before her father came to this city.

②状语从句

状语从句有时间状语从句(常由when, while, before, after, until, as soon as等词引导)、地点状语从句(常有where 引导)、原因状语从句(常有because, since, as 引导,这三词所表达的语气由because到as逐渐减弱,由why提出的问题必须用because 来回答), 条件状语从句(常由if引导)、结果状语从句(常由such … that…, so…that…, so that等引导 )、让步状语从句(常由though, although引导)。

③定语从句

其考查内容主要是正确使用关系代词{who(指人)、that(指人或物)、which(指物)} , etc. 定语从句一般紧跟在修饰词的后面,如:She is the person who I want to see. 她就是我想见到的人。有时,为了使句子平衡,也可把定语从句与所修饰词分开。

同学们还记得这样一句话吗?Then a screen came up that read,“Congratulations!” 这是第三册第54课中的一个句子。

 并列句

并列句的考查重点是并列连词。并列连词有and, or, but, both… and, neither… nor, either… or, not only… but also…等。

 简单句

应特别注意掌握的简单句

有介词的`特殊疑问句

在特殊问句中,作为介词宾语的疑问代词可以与介词分离,放在句首,而把介词放在句尾。

如,Whom do you travel with?当然,也可以把介词放在句首。

总之,不要把介词丢掉。

有插入语的特殊疑问句

在特殊问句中,经常可以看到这样的句子:Where do you think they may go?其中,do you think 是疑问式插入语,其余部分是think的宾语从句。注意,疑问式插入语同句子的其余部分不用逗号分开。

疑问式插入语还有do you hope, do you guess 等。在肯定句中也有插入语。如:That man, I guess, is neither a policeman nor a soldier. 在肯定句的插入语要用逗号与句子的其他部分分开。去掉插入语,该句子仍然是个完整的句子。

You’d better (not)… (do sth.) 这个说法常用于提出“劝告,建议,告戒”。 比较委婉的有礼貌的说法是 Would you like …? 或 What about (doing)…?如,It’s too dark. You’d better leave at once. I’m afraid (that) … I’m afraid (that) I can’t go with you today. 常用来委婉地表示自己的看法或预料一件令人不悦的事情。

  其他句式

不可数名词(单复数形式不变)

bread, rice, water ,juice etc.

缩略形式

I’m = I am you’re = you are she’s = she is he’s = he is

it’s = it is who’s =who is can’t =can not isn’t=is not etc

a/an

a book, a peach

an egg an hour

Preposition:

on, in ,in front of, between, next to, near, beside, at, behind.

表示时间: at six o’clock, at Christmas, at breakfast

on Monday on 15th July On National Day

in the evening in December in winter

基数词和序数词

one – first two-second twenty-twentieth

Some /any

I have some toys in my bedroom.

Do you have any brothers or sisters?

be 动词

(1) Basic form: am/are/is

(2) 肯定和否定句 I am(not) from London.

My eyes are(not) small.

My hair is(not) long.

(3)一般疑问句: Am I a Chniese? Yes, you are. No, you aren’t.

Are they American? Yes, they are. No, they aren’t.

Is the cat fat? Yes, it is. No, it isn’t.