语数英最为三门主课,看起来毫不相干,但三科的学习方法其实基本都是一样的,数学记公式,语文记古诗,英语记单词。学习英语,需要把陌生的单词片语和句型语法不断的熟悉和熟练。的小编精心为您带来了初中英语语法总结(最新3篇),希望能够帮助到大家。
一、语态概述
英语的语态是通过动词形式的变化表现出来的。英语中有两种语态:主动语态和被动语态。
主动语态表示主语是动作的执行者。
例如:Many people speak Chinese.
谓语:speak的动作是由主语many people来执行的。
被动语态表示主语是动作的承受者,即行为动作的对象。例如:Chinese is spoken by many people. 英语English是动词speak的承受者。
二、被动语态的`构成
被动语态由助动词be+及物动词的过去分词构成。人称、数和时态的变化是通过be的变化表现出来的。现以speak为例说明被动语态在各种时态中的构成。
一般现在时:am/is/are+spoken
一般过去时:was/were+spoken
一般将来时:will/shall be+spoken
现在进行时:am/is/are being+spoken
过去进行时:was/were being+spoken
现在完成时:have/has been+spoken
过去完成时:had been + spoken
三、被动语态的用法
(1)不知道或没有必要说明动作的执行者是谁。
例如:Some new computers were stolen last night.一些新电脑在昨晚被盗了。(不知道电脑是谁偷的)
This bridge was founded in 1981.这座桥竣工于1981年。
(2)强调动作的承受者,而不强调动作的执行者。
例如:The glass was broken by Mike.玻璃杯是迈克打破的。
This book was written by him.这本书是他写的。
Your homework must be finished on time.你们的家庭作业必须及时完成。
四、主动语态变被动语态的方法
(1)把主动语态的宾语变为被动语态的主语。
(2)把谓语变成被动结构(be+过去分词)(根据被动语态句子里的主语的人称和数,以及原来主动语态句子中动词的时态来决定be的形式)。
(3)把主动语态中的主语放在介词by之后作宾语,将主格改为宾格。例如:
All the people laughed at him.
He was laughed at by all people.
They make the bikes in the factory.
The bikes are made by them in the factory.
He cut down a tree.
A tree was cut down by him.
五、含有情态动词的被动语态
含有情态动词的主动句变成被动句时,由情态动词+be+过去分词构成,原来带to的情态动词变成被动语态后to仍要保留。
We can repair this watch in two days.
This watch can be repaired in two days.
They should do it at once.
It should be done at once.
六、特殊情况
1.He made the boy work for two hours yesterday.
The boy was made to work by him for two hours yesterday.
2.Mother never lets me watch TV .
I am never let to watch TV by mother.
3.Jack gave Peter a Christmas present just now.
(1)A Christmas present was given to Peter by Jack just now.
(2)Peter was given a Christmas present by Jack just now.
构词法:
英语构词法主要有:合成法、派生法和转换法。
1、合成法:如:spaceship, headache, basketball, playground等等。
2、派生法:(1)派生名词:①动词+er/or ②动词+ing ③动词+(t)ion ④形容词+ness ⑤其他,如:inventor, learner, swimming, congratulation, kindness, carelessness, knowledge
(2)派生形容词:①名词+y ②名词+ful ③动词+ing/ed ④friendly ⑤dangerous ⑥Chinese; Japanese ⑦English ⑧French ⑨German ⑩国名+(i)an 如:snowy, sunny, hopeful, beautiful, interesting, following, daily(每日的),nervous, delicious
(3)派生副词:①形容词+ly ②其它,如:slowly, angrily, full→fully, good→well, possible→possibly
3、转换法:
(1)形容词→动词,如:dry(干燥的)→dry(弄干), clean(干净的)→clean(打扫,弄干净),等等。
(2)动词→名词,如:look, walk, rest, work, study, swim, go, talk等等。
(3)名词→动词,如:hand(手)→(传递),face(脸)→(面对)等等。
(4)形容词→副词,如:early→early, fast→fast等等。
(5)副词→连词,如:when(什么时候)→(当……时候),等等。
(6)介词→副词,如:in(到……里)→(在里面;在家),on(在…上)→(进行,继续)
名词:
1、英语名词可分专有名词和普通名词两大类:
1、专有名词是个别的人、地、物、团体、机构等的专用名称。
专有名词如果是含有普通名词的短语,则必须使用定冠词the。如:the Great Wall(长城)
姓氏名如果采用复数形式,则表示该姓氏一家人(复数含义),如:the Greens( 格林一家人)。
2、普通名词又分为可数名词和不可数名词。
2、英语可数名词的单复数:英语可数名词有单数和复数两种形式。
1hero→heroes, photo→photos, piano→pianos.
不可数名词一般没有复数形式,说明其数量时,要用有关计量名词。一盒牛奶:
3、名词所有格:
1、 名词所有格如:Childern’s Day(儿童节), my sister’s book(我姐姐的书)
(2)以s或es结尾的复数名词。只在词尾加’。如:Teachers’ Day(教师节)
(3)有些表示时间、距离以及世界、国家、城镇等无生命的名词,也可在词尾加’s. 如:
today’s newspaper(今天的报纸), ten minutes’ break(十分钟的课间休息),
(4)无论表示有生命还是无生命的东西的名词,一般均可用介词of短语来表示所有关系。如:
2、[注解]:
① ‘s还可以表示某人的家或者某个店铺,如:my aunt’s(我阿姨家), the doctor’s(诊所)
② 两人共有某物时,可以采用 A and B’s 的形式,如:Lucy and Lily’s bedroom(露西和丽丽合住的卧室)
③ “of+名词所有格/名词性物主代词”,称为双重所有格,如:a friend of my father’s(我父亲的一位朋友), a friend of mine(我的一位朋友)
4、名词或代词作主语时和谓语之间的单复数的一致问题:
1、谓语和谓语基本保持单复数的一致,即:主语是可数名词单数或不可数名词时,谓语动词用单数形式:如:The computer was a great invention.(计算机是个了不起的发明)The water in the glass is very cold.(玻璃杯里的水很冷)
2、集体名词(如family, class, team, group, row, police, school等)做句子主语时,
① 如果表示整体概念,则谓语用单数形式,如:Class Three is a very good class.(三班是好班)
② 如果表示其中的所有成员时,则谓语用复数形式,如:Class Three have a map of China.(三班有张中国地图)
3、Chinese, Japanese, fish, sheep, people等表示单个时谓语用单数,表示许多时,谓语用复数。如:There is a sheep in the yard.(院子里有只绵羊) / There are some sheep in the yard.(院子里有一些绵羊)
4、maths, news等虽然有s结尾,但不是复数,因此谓语仍用单数:The news is very exciting. (这个消息令人兴奋)
5、glasses, shoes, socks, trousers, gloves等名词往往用复数形式,故谓语用复数。如:
The trousers are very cheap and I want to take them.(裤子很便宜,我想买)
6、a lot of 后跟名词复数时谓语用复数形式,跟不可数名词时谓语用单数形式。如:A lot of students are playing baseball now.(现在有许多学生在打垒球) A lot of time was wasted on that work.(大量的时间花在了那个工作上)(被动句)
7、and 连接两个名词做主语时,谓语原则上用复数,但是两个名词若构成一个整体事物时,谓语则用单数。如:The teacher and his son are picking apples now.(老师和他的儿子在摘苹果) / Fish and chips is very famous food. (鱼和薯条是一种出名的食品)
8、 there be 句型中be的单复数一般由靠近的名词决定。如:There is a table and four chairs in the room.(房间里有一张桌子和四张椅子)
9、用both…and…连接两个事物做主语时,谓语一般用复数。如:Both you and I are required to be here tomorrow.(你和我明天要求都来)
10、主语中含有with的短语时,谓语单复数由with之前的人物决定。如:A woman with a 7-year-old child was standing at the side of the road. (一名妇女带着一个七岁的孩子(当时)就站在路边)
11、either…or…或者 neither…nor…连接两个人物做句子主语时,谓语采用就近原则。如:Either you or he is right.(要么是你对,要么是他对。/你和他有一个人是对的) / Neither you nor I am going there.(你和我都不打算去那里)
12、表示一段时间或长度概念的复数名词做主语时,谓语一般用单数。如:Two months is not a short time.(两个月不是个短时间)Two thousand kilometers is quite a long distance(距离)。(两千千米是相当长的一段距离)
13、主语中含有half of… / (three quarters)of… / all (of) the …。等词语时,谓语的单复数由名词确定,如:Over three quarters of the information on the Internet is in English. / A third of the students were playing near the lake.(学生的三分之一(当时)正在湖边玩耍) / All of the water in these rivers has been polluted.(这些河流中的水已经被污染了)(被动句)
但是,population一词又有特殊情况: What’s the population of China?(中国人口是多少?)(句子用单数) / Three quarters of the population in this city are Arabs(阿拉伯人)。(这个城市四分之三的人口是阿拉伯人)(句子用复数)
5、部分名词用法辨析:
1、sport、game、match、race 的区别:sport通常指“户外运动”,以锻炼为主,概念较大;game意思是“运动、比赛”,不管户内户外还是脑力体力,指以胜负为主的运动;match意为“竞赛、比赛”,多指正式比赛;race主要表示“赛跑、赛马、赛车”。如:People all around the world enjoy sports.(全世界的人都喜爱运动) / The 2008 Olympic Games will be held in Beijing.(2008奥运会将在北京举行)(被动句) / Our school football team won the league match(联赛)。(我们学校足球队取得了联赛冠军) / They were strong and won the boat race.(汤他们很棒,赢得了划艇比赛)
2、festival、holiday、vacation的区别:festival“节日”,指喜庆的日子或持续一段时间的文娱活动;holiday(假日、休息日),指法定假日或风俗习惯,复数可以表示一个较长的假期;vacation“假期”,指学习或工作中一段长时间的休息。如:The Shanghai Television Festival will be held next month.(上海电视节将在下个月举行) / Sunday is a holiday and most people do not work.(星期天是个假日,多数人不工作) / What are you going to do during the summer vacation/holidays?(在暑期你打算做什么事情?)
3、journey、tour、trip、travel的区别:journey指在陆地上(或海上或空中)进行的长途旅行,不知终点,含有辛苦的意思;tour指途中作短期逗留的巡回旅行,强调游览多处,常用来指观光等;trip通常指往返定时的短途旅行,如出差度假等;travel多指长期或长途的观光旅行,尤其指到国外,没有明确目的地,也作不可数名词,指旅行这一行为。如:He made up his mind to make the journey to Dunhuang.(他拿定主意要去敦煌旅行)/ He has gone on a walking tour.(他步行观光去了) / He took several trips to Shanghai last yeaar.(去年他去了上海好几次) / Did you go to Santiago(圣地亚哥) during your travels?(旅行期间你去圣地亚哥了吗?) / Travelling through thick forests is dangerous.(在密林里边穿行是很危险的)
4、sound、noise、voice的区别:sound指各种声音;noise主要指“噪音”;voice指人的“嗓音”。如:The noise of the street kept me awake in the night.(街上的喧嚣声让我彻夜难眠) / All of a sudden there was the sound of shots and a cry.(突然间传来几声枪响和一声尖叫) / The singer has lost her ringing voice as a result of a bad cold.(因为感冒的缘故,这个歌唱家失去了她银铃般的嗓音)
5、fish的问题:指许多条鱼且不管种类时,用fish,单复数相同;fishes 指许多种类的鱼;fish指“鱼肉”时是不可数名词。如:There are many kinds of fishes in the pool. (池子里有很多种类的鱼)/ I prefer fish to meat.(与肉相比我更喜欢鱼)
代词:
1、代词的分类:英语中代词分为:人称代词、物主代词、反身代词、指示代词、关系代词、疑问代词、连接代词和不定代词等等。
2、人称代词:人称代词代替人和事物的名称,分为主格和宾格两种形式。
一、at, on, in
(A) at表示“在某一时刻,某一时点”。如:
I get up at 6:00 every day. 我每天6点起床。
注:at daybreak在黎明;at noon在中午;at night在夜间;at Christmas在圣诞节期间;at the age of five在五岁时。
(B) on表示“在具体某一天或某天的上、下午”。如:
I heard a shot on (the morning of ) March 18. 三月十八日(早晨) 我听到一声枪响。
We don’t have classes on Sunday. 星期天我们不上课。
(C) in表示“在某世纪、年、季度、月、周”以及泛指的上、下午、晚上。如:
in the 20th century在20世纪;in 1999在1999年;in winter在冬季;in September在九月;in the morning/afternoon/evening 在上午/下午/晚上。
二、for, during, through
(A) for后接“一段时间”,表示某事持续多久,多与完成时连用。如:
She has been ill for several days. 她已经病了几天了。
(B) during表示“在……期间”。如:
I went to France for two weeks during the summer. 夏天我去了法国两个星期。
(C) through表示“一直……,自始至终”。如:
They worked hard through the winter. 整个冬天他们都在努力工作。
三、from, since
(A) from表示“时间的起点”,可译作“从……”,多用于“from…to/till…”中。如:
You can come anytime from Monday to Friday. 周一至周五你什么时间来都行。
(B) since表示“自从……以来(直到现在)”。如:
He has been away from home since 1973. 他自从1973年就离开了家乡。
We have known each other since ten years ago. 我们十年前就认识了。
注意:for和since都常与完成时连用,但for接时间段,since接时间点。如for two hours(持续)两小时;since last week从上周直到现在。
四、before, by, till, until
(A) before指“在……之前”,与after相对。如:
Please come before ten o’clock. 请10点以前来。
(B) by指“不迟于,到……时为止,在……以前”。如:
We had learned over 1000 words by the end of last term. 到上学期末为止,我们已经学了1000多个单词了。
We will have learned 2000 English words by the end of this term. 到本学期结束前,我们将学了两千英语单词了。
注:by后接过去时间,常与过去完成时连用;by后接将来时间,常与将来完成时连用。
(C) till (until) “直到……为止”。如:
You must wait for him till tomorrow. 你必须一直等到他明天。
注:在肯定句中,till/until必须与延续动词连用;在否定句中,till/until常与非延续性动词连用。如I didn’t go to bed until 12 o’clock. 直到12点我才睡。
五、after, in, within
(A) after表示“在……之后”,是before的反义词。如:
He got a cancer and died after a year. 他患了癌症,一年后去世了。
The meeting will end afte