
高考英语语法精要讲解二十四:过去完成时
1、过去发生的两个动作,先发生的`用过去完成时
With their help I realized that I had been wrong.
2、过去某时以前发生的动作或情况
He hasn’t finished yet.
He didn’t finish yesterday evening.
He hadn’t finished by yesterday evening.
3、常用过去完成时的情况
①No sooner…than…. Hardly…when…
No sooner had he begun his speech than he was interrupted
②expect, hope, think, want, suppose等动词的过去完成时(或一般时)表示想做而未做的事
I had planned to send him a telegram, but I didn’t manage it.
4、使用过去完成时的必要性和非必要性
①句意十分清楚时,可用一般时
After I finished, I went home.
②常用一般过去时表示依次发生的动作
I got out of the taxi, paid the fare(车费) and managed it.
③有时必须明确,特别是含when时
When I arrived, Ann left.
(同时见到)(见到Ann)
When I arrived, Ann had left.
(先后发生)(没见到)
5、常用过去完成时的时间主状语
by the end of +过去时间 ; by + 过去时间
by the time + 过去时间;过去时间 + before
比较:
By the time he was 11, he had learned 3000 words .
By the time he is 11, he will have learned 3000 words.
By the time last week, I had learned 3000 words.
By the time next week, I will have learned 3000 words
一、冠词基本用法
【速记口诀】
名词是秃子,常要戴帽子,
可数名词单,须用a或an,
辅音前用a, an在元音前,
若为特指时,则须用定冠,
复数不可数,泛指the不见,
碰到代词时,冠词均不现。
【妙语诠释】冠词是中考必考的语法知识之一,也是中考考查的主要对象。以上口诀包括的意思有:
①名词在一般情况下不单用,常常要和冠词连用;
②表示不确指的可数名词单数前要用不定冠词a或an,确指时要用定冠词the;
③如复数名词表示泛指,名词前有this,these,my,some等时就不用冠词。
二、名词单数变复数规则
【速记口诀】
单数变复数,规则要记住,
一般加s,特殊有几处:
/s/结尾,es不离后,
末尾字母o,大多加s,
两人有两菜,es不离口,
词尾f、fe,s前有v和e;
没有规则词,必须单独记。
【妙语诠释】
①大部分单数可数名词变为复数要加s,但如果单词以/t?蘩/、/?蘩/、/s/发音结尾(也就是单词如果以ch,sh,s,x等结尾),则一般加es;
②以o结尾的单词除了两人(negro,hero)两菜(tomato,potato)加es外,其余一般加s;
③以f或fe结尾的单词一般是把f,fe变为ve再加s;
④英语中还有些单词没有规则,需要特殊记忆,如child—children,mouse—mice,deer—deer,sheep—sheep,Chinese—Chinese,ox—oxen,man—men,woman—women,foot—feet,tooth—teeth。
三、名词所有格用法
【速记口诀】
名词所有格,表物是“谁的”,
若为生命词,加“’s”即可行,
词尾有s,仅把逗号择;
并列名词后,各自和共有,
前者分别加,后者最后加;
若为无生命词,of所有格,
前后须倒置,此是硬规则。
【妙语诠释】
①有生命的名词所有格一般加s,但如果名词以s结尾,则只加“’”;
②并列名词所有格表示各自所有时,分别加“’s”,如果是共有,则只在最后名词加“’s”;
③如果是无生命的名词则用of表示所有格,这里需要注意它们的顺序与汉语不同,A of B要翻译为B的A。
四、接不定式作宾语的动词
【速记口诀】
三个希望两答应,两个要求莫拒绝;
设法学会做决定,不要假装在选择。
【妙语诠释】 三个希望两答应:hope,wish,want,agree,promise
两个要求莫拒绝:demand,ask,refuse
设法学会做决定:manage,learn,decide
不要假装在选择:petend,choose
从属连词从属连词是用来引导从句的。
1.连词that, if, whether,连接代词what, which, who, whom, whose以及连接副词how, when, why, where可用来引导名词从句,充当主语、表语、宾语等。非正式文体中的宾语从句常省略that:
I think (that) he’ll be back in an hour. 我认为他一小时后就会回来。
Who they are doesn’t matter much. 他们是谁没什么大关系。
Can you tell me where he is? 你能告诉我他在哪儿吗?
He asked me if/whether I knew John. 他问我是否认识约翰。
此外,that, which, who, whom, whose, when, why, where等还可以引导定语从句。
2.连词when, while, before, after, till/until, since, as soon as等引导时间状语从句:
She said hello to me when she saw me. 她看到我的时候,和我打了招呼。
I’ll wait here until you come back. 我将在这里等你回来。
3.连词if, unless引导条件状语从句;because, as, since引导原因状语从句:
I’ll help her if she asks me to. 如果她要求我,我就帮助她。
I won’t help her unless she asks me to. 除非她要求我,否则我不会帮她。
He didn’t come because he was ill. 因为他病了,所以没来。
As he hasn’t appeared yet, we shall start without him. 既然他还没有出现,我们就先开始吧。
Since everybody is here, let’s begin. 既然大家都到了,咱们就开始吧。
4.连词in order than, so that引导目的状语从句;so…that…引导结果状语从句:
I locked the door in order that we might continue our discussions undisturbed. (=I locked the door in order to continue our discussions undisturbed.) 我把门锁上了,以便我们可以继续讨论而不受打扰。
The car ran so fast that I couldn’t see who was in it. 汽车跑得那么快,我没看清谁坐在里面。
5.连词than, as…as…, not as/so…as…用来引导比较状语从句:
He is better educated than his brother. 他比他兄弟受的教育好。
He is as well educated as his brother. 他和他兄弟受的`教育一样好。
He is not as/so well educated as his brother. 他没有他兄弟受的教育好。
6.连词although, though 引导让步状语从句;where, wherever 引导地点状语从句:
I’ll go wherever you go. 不管你去哪儿,我就去那儿。
Stay where you are! 原地别动!
Though/Although she is rich, she’s not happy. 尽管她富有,但她并不幸福。
一般来说,连词性质的连接词连接两个分句或引导一个从句,两个分句或主从复合句之间用逗号连接。



