人教版八年级上册英语1-5单元知识点梳理
Unit 1 Where did you go on vacation
语法知识
一般过去时
1.一般过去时表示过去某个时间发生的动作或存在的状态,常和表示过去的时间状语连用。一般过去时也表示过去经常或反复发生的动作。
2.Be动词在一般过去时中的变化:
⑴am 和is在一般过去时中变为was。(was not=wasn’t)
⑵are在一般过去时中变为were。(were not=weren’t)
⑶带有was或were的句子,其否定、疑问的变化和is, am, are一样,即否定句在was或were后加not,一般疑问句把was或were放到句首。
3.句中没有be动词的一般过去时的句子
否定句:didn’t +动词原形,如:Jim didn’t go home yesterday.
一般疑问句:在句首加did,句子中的动词过去式变回原形。
如:Did Jim go home yesterday?
特殊疑问句:
⑴疑问词+did+主语+动词原形?如: What did Jim do yesterday?
⑵疑问词当主语时:疑问词+动词过去式?如:Who went to home yesterday?
动词过去式变化规则:
1.一般在动词末尾加-ed,如:pull-pulled, cook-cooked
2.结尾是e加d,如:taste-tasted
3.末尾只有一个元音字母和一个辅音字母的重读闭音节,应双写末尾的辅音字母,再加-ed,如:stop-stopped
4.以“辅音字母+y”结尾的,变y为i,再加-ed,如:study-studied
5.不规则动词过去式:参照P142-P143
二.复合不定代词的使用
复合不定代词是由some-,any-,no-,every-加上-one,-body,-thing等所组成的不定代词。复合不定代词包括 something, somebody, someone, anything, anybody, anyone, nothing, nobody, no one, everything, everybody, everyone 等十二个。这些复合代词具有名词性质,在句中可用作主语、宾语或表语,但不能用作定语。
一、复合不定代词的指代对象
1、含-body和-one的复合代词只用来指人,含-body的复合不定代词与含-one的复合不定代词在功能和意义上完全相同,可以互换。只是用-body时显得较通俗些,多用于口语中,用-one时显得较文雅些,更常见于正式场合及书面语中。如:
Someone/Somebody is crying in the next room.有人在隔壁房间哭。
No one/Nobody is stupid. 没有谁是愚蠢的。
2、含-thing的复合不定代词只用来指事物。如:
Are you going to buy anything?你会去买东西吗?
I can hear nothing but your vioce. 我只听到了你的声音。
二、复合不定代词的属格
1、含-one和-body等指人的复合代词可有-’s属格形式。如:
Everybody’s business is nobody’s business.大家的事情没人管。
Is this anybody’s seat? 这儿有人坐吗?
2、含-one和-body等指人的复合代词后跟else时,-’s属格应加在else之后。如:
Can you remember someone else’s name? 你还记得其他人的姓名吗?
3、含-thing等指事物的复合不定代词没有-‘s属格形式。
三、复合不定代词的数
1、复合不定代词都具有单数的含义,因此通常被看成是单数第三人称。当它们充当句子的主语时,其后的谓语动词用单数形式。如:
Is everyone here today? 今天,大家都到齐了吗?
Nothing is difficult if you put your heart into it. 世上无难事,只怕有心人。
2、当要对一群人讲话时,可使用以复合不定代词作主语的祈使句,句中的动词用原形。如:
Nobody move!= Don’ anybody move! 都别动!
Everyone lie down! 统统趴下!
四、复合不定代词的替代问题
由于复合不定代词都具有单数的含义,所以在正规的英语中用来替代它们的代词也应该是单数形式。
1、含-one和-body等指人的复合代词,其代词应该是he/she, him/her,其-‘s属格形式的代词应该是his/her, his/hers。如:
Everyone has his/her own words. 每个人都有他(她)自己的说辞。
但是,这样一来就会因为性别的差异而使得在代词的运用上具有不确定性,所以为了避免这种别扭的情况,我们一般都是用they/them/their/theirs,尤其是在口语中以及非正式场合下。如:
No one gave you a ticket, did they? 没人给你票,是吗?
Someone came in, but I didn’t know who they were. 有人进来了,但我不知道是谁。
2、含-thing等指事物的复合不定代词,不会因性别上的差异而使得在代词的运用上产生不确定性,因此我们就使用it。如:
Something goes wrong, doesn’t it?出问题了,是吗?
五、复合不定代词的定语
复合不定代词的定语必须后置,即放在复合不定代词的后面。如:
Can you tell something interesting? 你能讲些有趣的事情吗?
Is there anybody important here? 这儿有大人物吗?
Would you like something to eat? 要来些吃的东西吗?
六、含some-和any-的复合不定代词间的用法区别
由some-和any-所构成的复合不定代词(即something和anything;someone和anyone;somebody和anybody)之间的区别跟some和any的区别一样。
1、something,someone,somebody通常用于肯定句中,而anything,anyone,anybody一般用于否定句,疑问句或条件状语从句中。如:
He found something strange but interesting.他发现了一些奇怪但却有趣的事情。
Do?you?have?anything?to?say??你有话要说吗?
I can’t meet?anybody??on?the?island. 在岛上,我没遇见任何人。
2、在表示请求、邀请、提建议等带有委婉语气的疑问句,和希望得到对方肯定答复的疑问句,以及表示反问的问句中,也用something,someone,somebody等复合不定代词。如:
Would?you?like?something?to?eat?要些吃的东西吗?
Isn’t there something wrong with you? 难道你没问题吗?
3、当anything表示“任何事(物),无论何事(物)”,anyone,anybody表示“无论谁,任何人”等意义时,它们也可以用于肯定句中。如:
Anything is OK. 什么都行。
Anybody knows the answer.任何人都知道答案。
七、复合不定代词的否定
1、“not every-”表示的是部分否定,意为“并非都,不都”。例如:
Not everything will go well. 并非一切都会那么顺利。
The teacher didn’t call everyone’s name. 老师并没有点所有人的名。
2、“not any-”和no-均表示全否定。例如:
He listened, but heard nothing.他听了听,但什么也没听到。
= He listened, but didn’t hear anything.
You haven’t called anyone/anybody up, have you? 你没给谁打过电话,是吗?
= You have called no one/nobody up, have you?
八、复合不定代词作名词
复合不定代词可以充当名词用,表示“……的事情(东西或人)”。
1、someone/somebody, anyone/anybody的意义是“重要人物,大人物”,everyone/everybody意为“最重要的人”,no one/nobody则意指“无关紧要的人,小人物”。例如:
2、something,anything的意义是“重要事情(东西)”,everything表示“最重要的事情(东西)”,nothing则指“毫无趣味的事情,无关紧要的东西”。
九、合与分的区别问题
1、 someone,anyone,everyone都只能指人,且不和介词of连用;some one,any one,every one则既可指人又可指物,可与介词of连用。例如:
Anyone should be polite to every one of them.任何人都要礼貌对待他们中的每一个人。
---Which toy would you like? ---Any one is OK. ---你要那个玩具?---随便。
2、no one(=nobody)“没有人”,只用来指人,通常不和介词of连用;none“没有一个”,既可以用来指人也可用来指物。例如:
No one can do it better. 没有人能做得更好。
None of these questions is easy, and none of us can even answer any one of them.这些问题没有一个是容易的,我们中没有一个人能答出其中的一题。
回答who引导的特殊疑问句时用no one;回答how many引导的特殊疑问句时用none。例如:
---Who was late ? ---No one. ---谁迟到了?---谁也没有迟到。
---How many pigs do you keep? ---None. ---你养几头猪?---一头也没养。
三.短语词组
1.It seems that+从句
e.g. It seems that she is a good girl.她看起来是个好女孩
------She seems to be a good girl.当去掉it做形式主语时可以将主语置于前。
2. decide to do sth
e.g. I decide to get a full score in the final exam.
我决心期末考试的时候我要考满分
3.try to do sth 尽力去做….
e.g. I try to study English well.我尽力去学好英语
try doing sth 尝试做…..
e.g. I try studying English well.我尝试将英语学好。
4.①feel like+从句
e.g. I feel like I have got a fever.
②feel like doing sth
e.g. I feel like flying like a bird.
5.wait for sb/sth
e.g. I wait for my mother on the road./I wait for the NO.5 bus under the platform
6.①because of +介词短语/名词/代词/名词性短语
e.g. Because of you, I have finished the homework.因为你我才能把作业完成。
because+句子
e.g. Because he drived too fast, he hit another car.
因为他开的太快了,他撞上了另一辆车。
7. 一)as作副词,表示程度,意为“同样地”。在“as...as...”,“not as...as...”结构中的第一个as是副词,作“和/与...(不)一样”解。eg:
Jack is as tall as his father.杰克和他的父亲一样高。
He doesn't speak English as/so fluently as you.他的英语说得不如你流利。
二)as作介词。
1.作“如,像”解。eg:
They got united as one man.他们团结得像一个人一样。
2.作“充当,作为”解。eg:
As a writer,he was famous.作为作家,他是很有名的。
三)as作连词,常用来连接主句和状语从句。
1.引导时间状语从句,作“当...的时候”解,有“随着...”之意,与while意义相近,强调两个动作同时发生;或某事一发生,另一事立即发生。eg:
He shouted aloud as her ran along.他一边往前跑,一边高声地呼喊。
I was startled as he opened the door.他一开门,我吓了一跳。
as作连词,相当于when。eg;
As a little boy (When he was a little boy)he began to learn to play piano.他小时候就开始学弹钢琴。
2.引导原因状语从句,作“因为,由于”解,与because的用法相近。eg;
I must stop writing now,as I have rather a lot of work to do.我必须停笔了,因为我还有许多工作要做。
3.引导方式状语从句或比较状语从句,作“正如,(如)像”解。例eg:
As in your country,we grow wheat in the north and rice in the south.正如(像)你们国家一样,我们在北方种小麦,在南方种大米。(方式状语从句)
When at Rome,do as Romans do.入乡随俗。(方式状语从句)
4.引导让步状语从句,作“虽然,尽管”解。这时从句常用倒装语序,即把从句中的表语、状语或动词原形放在as之前。eg;
Strange as it may seem,it is true.尽管这事看上去很奇怪,但却是真的。
Try as he might,Tom could not get out of the difficulties.不管怎样努力,汤姆还是摆脱不了困境。
四)as作关系代词。
1.引导限制性定语从句,用在“such...as”,“the same...as”,“as...as”等结构中,常译作“像...一样的人(或物)”,“凡是...的人(或物)”。例eg:
He wished to be such a man as Lei Feng was.他曾希望做一个像雷锋那样的人。
My hometown is no longer the same as it was.我的家乡再也不像过去一样了。
2.引导非限制性定语从句,用来指代它前面的整个句子(即先行句),意思是“这一点”。这个分句可以位于句首、句中或句末。eg:
As is well known,oceans cover more than 70% of the earth.我们知道,海洋占地球面积的百分之七十以上。
五)含as的固定词组的用法
1.as soon as作“一…就”解,引导时间状语从句。eg:
As soon as I get to Beijing,I'll write to you.我一到北京,就给你写信。
2.as/so long as作“只要”解,eg;
As/So long as you study hard,you'll make progress.只要你努力,你就会取得进步。
3.as if/though常用来引导方式状语从句,作“好像,仿佛”解。如果从句中讲的是非真实情况,则用虚拟语气。eg:
She loves the child as if/though he were her own.她爱这个孩子如同爱自己的孩子。
As if/though也可用来引导表语从句,常用在“It appears/looks/seems...+as if/though”句型结构中。eg;
It appears as if/though it is going to clear up.看起来天要晴了。
It seems as if/though he knew nothing about it.他好像对此事一无所知。
4.as to作“关于,至于”解。eg;
There is no doubt as to his honesty.他的诚实是无可置疑的。
5.as much/many as作“多达...”,“达到...之多”解。eg:
He can earn as much as 5000 dollars a month.他每月能挣5000美元。
6.so/as far as I know作“就我所知”解,在句中作插入语。eg:
As/So far as I know,he will come here next Monday.据我所知,他将于下星期一到这里来。
7.as a result,as a result of表示“由于...的结果”。eg:
She died as a direct result of the accident.她的死是那次事故的直接结果。
8,as well为“也,还”之意。eg:
Come early,and bring your brother as well.早点来,把你的弟弟也带来。
9.so as to,so...as to若跟动词原形,表示目的或结果。eg:
He studied hard so as to pass the exam.他努力学习以便通过考试。(表示目的)
as……as
AS +adj(原级)+AS
AS +adv(原级)+AS
as soon as 一……就
as soon as possible 尽可能快地
as early as possible 尽可能早的
as carefully as you can 尽可能认真地
as careful as you can 尽可能认真的
so...as 一般用于否定句,as...as 一般用于肯定句,(肯定否定都能用)
so...as不可用于肯定句.as...as与so...as均可表示"与……一样",as...as...的用法:两个as中间可以加形容词或者副词,由它要修饰的内容决定.
它们的用法有异同之处:
肯定句用as...as,不用so...as;否定句两者均可使用.例如:
I didn't go as /so far as you.我走得不像你那么远.
They walked as far as the station.他们步行到了车站.
误:They walked so far as the station.
8.long time no see 好久不见
9.quiet a few 相当多的
a few +可数名词的复数 表示“一些…”
10.stay at home 呆在家里
11.arrive in +大地点(Beijing/Shanghai/Guangzhou…
arrive at +小地点(school/park/…
12.a lot of /lots of +可数名词/不可数名词
13. begin(start) doing/to do begin / start to do sth /begin / start doing sth.
1) 谈及一项长期活动或开始一种习惯时,使用doing。例如: How old were you when you first started playing the piano? 你几岁时开始弹钢琴?
2) begin, start用进行时时,后面动词用不定式to do。例如: I was beginning to get angry。我开始生起气来。
3)事物作主语时。例如: The snow began to melt.雪开始融化了
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