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七年级英语语法知识点汇总
一.字母和音标
1. 26个英文字母:5个元音字母a, e, i, o, u (联系汉语拼音中的韵母排列顺序
快速记忆)
2. 48个国际音标:20个元音组合,28个辅音组合。重点辨别相似发音的元音
组合。如:[ə] a China breakfast [e] ea head bread [ei] a name cake
二.十大词类
(一)名词
a. 专有名词和普通名词。专有名词指个别的人,事物,地点等专有的名称,如China, Gina. 普通名词如table, chair.
b. 可数名词和不可数名词:可数名词有复数形式,如an apple,two apples. 不可数名词一般没有复数形式,如milk, bread, rice.
[重点]可数名词的复数变形:有规则变化和不规则变化两种
规则变化:
1一般情况直接在词尾加 “-s”, 如: bag-bags, day-days, boy-boys, key-keys等。 ○
2以s, x, sh, ch结尾的单词,要在词尾加 “-es”, 如: bus-buses, watch-watches, ○
box-boxes等。
3以辅音字母加y结尾的单词,要变y为i再加 “-es”, 如:baby-babies, ○
country-countries, family-families等。
4部分以f (e)结尾的单词,要变f (e)为“ves”, 如:knife-knives, half-halves等。 ○
顺口溜:小偷(thief)的妻子(wife),为了自己(self)保命(life),站到架子上(shelf),用树叶(leaf)做的小刀(knife),将狼(wolf)劈成了两半(half)
5以字母“o”结尾的单词,没有生命的加“-s”,有生命的加“-es”,如:○
zoo-zoos, photo-photos, tomato-tomatoes.
口诀:黑人(Negro)英雄(hero)爱在火山(volcano)吃土豆(potato)西红柿(tomato)
不规则变化:
1改变单数名词中的元音字母:○man-men, woman-women, foot-feet, tooth-teeth等。
2单、复同形:sheep-sheep, fish-fish,cattle-cattle,deer-deer, Chinese-Chinese, Japanese-Japanese等。 ○
3其他形式如: mouse-mice, child-children,person-people,ox-oxen等.
4、一些名词虽分单数、复数,但出现次数多的总是单数词
例:abscence; clothing; film; help; furniture家具; machinery机械; news; scenery风景; sugar; traffic交通
5、另一些名词则以复数词出现的机会较多
例:bellows风箱; clothes; police; shorts短裤; scissors剪刀; spectacles眼镜; shears大剪刀 trousers长裤; wages工资
名词所有格:表示所属关系
1. 单数名词词尾直接加’s, 复数名词词尾没有s的也要加’s, 如the boy’s bag 男孩的书包 men’s room 男厕所 Children’s Day 儿童节
2. 若是复数名词词尾有s ,只加“ ’”, 如:Teachers’ Day 教师节
3. 如果两个名词并列,并且分别有’s,则表示“分别有”;只有一个’s,则表示“共有”,如:John’s and Mary’s room(两间) John and Mary’s room(一间)
(二)冠词
1. 定冠词the:特指某(些)人或某(些)物,如The blue shirt is mine. 蓝衬衫是我的。
2. 不定冠词a/an: 用来表示“一”这个数量, 其中an放在元音字母开头的名词
前面,如 an apple, an orange.
3. 零冠词: 不用冠词的情况。在专有名词,不可数名词,学科名称,三餐和球类运动名称前不用冠词,如:Tian’an Men Square天安门广场
(三)代词(人称、物主、反身代词)
物主代词:包括名词性物主代词和形容词性物主代词。前者用法相当于名词,在句中可单独使用,如:--Who’s book is this? --It is mine. 后者用法相当于形容词,在句中不可单独使用,如 It is my book.
反身代词:表示“自己”,“本身”。
指示代词
(四)数词
1. 基数词:表示数目的多少
2. 序数词:表示事物的先后顺序,往往与冠词the连用
基数词变序数词口诀:
一、二、三,单独记;八去t,九除e, ve要用f替,整十基数变序数,先把ty变成tie;要是遇到两位数,十位基数个位序,th最后加上去。
口诀解析:one→first, two→second, three→third这三个词变化特殊,要单独记;eight→eighth, nine→ninth, 八去t,九去e后再加-th; five→fifth, twelve→twelfth,五和十二把ve换成f再加-th;twenty→twentieth, thirty→thirtieth... 整十先把词尾y改为ie再加-th。两位数时则十位数用基数词,个位数用序数词,如:twenty-first。
注:four→fourteen→forty(基数词)
fourth→fourteenth→fortieth(序数词)
三.时态:
(一)一般现在时:
a.表示习惯性、经常性、反复性的动作或存在的状态b. 表示事实或客观真理。 结构:
1. be动词(am, is, are)的用法
记忆口诀: “我”用am, “你”用are, is用于“他、她、它”;单数全都用is,复数全部都用are.
句子转换:当句子中有be动词或情态动词时,则把be动词或情态动词(can, could等等)提到主语的前面变成一般疑问句;在be动词或情态动词后面加not变成否定句
陈述句:She is a student. 一般疑问: Is she a student? 否定句:She is not a student.
2. 实义动词do(除第三人称单数外,谓语动词用原形)
句子转换:当句子中既没有be动词,也没有情态动词时,则在主语前加助动词do (I, you, we, they), does(单数she, he, it)变成一般疑问句;在主语后谓语动词前加助动词don’t(I, you, we, they), doesn’t(单数she, he, it)变成否定句,助动词后的动词要变成动词原形.
陈述句:We get up at 7:00 every morning.
一般疑问句:Do you get up at 7:00 every morning?
否定句:We don’t get up at 7:00 every morning.
【重点】动词第三人称单数(三单)的规则变化
1. 一般在词尾加-s,如: looks, puts, reads, sees等。
2. 以-o, -s, -x, -sh, -ch结尾的加-es,如: goes, does, watches, teaches
3. 以辅音字母加y结尾的,变y为i再加-es. 注:若是元音字母加y,则直接加-s。 如:fly → flies, try → tries, fry → fries, copy → copies
buy → buys, enjoy → enjoys, play → plays, say → says, pay → pays
总结:三单的变化规律与可数名词复数的(前三种)变化规律相似。
(二)现在进行时:
1. 表示现在(说话的瞬间)正在进行或发生的动作,强调“此时此刻”。 如:He is reading . They are talking now.
2. 表示当前一段时间内的活动或现阶段正在进行的动作。
如:They are working on a farm these days.
3. 结构:动词be(am/is/are)+V-ing
V-ing形式构成:
1. 一般在动词词尾加上-ing,如go→going look→looking watch→watching
2. 以不发音字母e结尾的动词,先去e,再加-ing. 如write→writing take→taking
3. 以重读闭音节结尾,且末尾只有一个辅音字母时,要先将词尾的辅音字母双写再加ing,如run→running shop→shopping get→getting sit→sitting
(三)一般过去时:表示过去某个时间里发生的动作或状态;或过去习惯性、经常性的动作、行为(used to);
1. 句子转换口诀:一般过去并不难,表示过去(动作、状态)记心间。 动词要用过去式,时间状语句末站。
如果动词是Be动词(was/were),构成主系表的结构。
如果动词是实义动词或除be动词以外的其它连系动词,需要将句中的动词变为过去时
否定句很简单,didn't动词(原形)前,其它部分不要变。疑问句也好变,did放在句子前,其它部分依次站。
陈述句He(she, it) worked
疑问句Did he(she, it) work?
否定句He (she, it)did not work
2. 表过去的时间状语
如:ago, yesterday, the day before yesterday, last week, last (year, night, month, 具体时间), just now, at the age of , one day, long ago, once upon a time(很久以前)
3. 动词变化规则:
规则变化:
a.一般情况直接加ed,如:work→worked look→looked
b. 以不发音的e结尾的,加-d,如:live →lived hope →hoped
c. 以辅音字母+y结尾的,变y为i加ed, 如:study→ studied
d. 以重读闭音节结尾的,末尾只有一个辅音字母,要双写最后的辅音字母加-ed,如: stop→ stopped plan→planned
特别提示:
1. 在清辅音后读/t / 如:helped stopped
2. 在元音或辅音后读/d / 如: stayed agreed
3. 在辅音/t /,/d /后读/id/ 如: wanted needed
不规则变化 :过去时和原形相同, 如:cut→cut read→read
四.There be句型结构
1. 结构的主谓一致。There is/are+某物/某人+某地/某时表示某地或某时存在某事或某人。句子的结尾往往带有地点状语或时间状语。其中there是引导词,本身没有词意,be是谓语动 词,be后面的名词是主语。be的数与后面的名词一致,若be后是两个或多个并列的名词,be则与靠得最近的那个名词的数一致。如 There was a meeting yesterday. 昨天有个会议
比较:
There is a pen, two books and many pencils on the desk. 桌上有一支钢笔、两本书和好些铅笔。
There are two books, a pen and many pencils on the desk
2.there be的否定、疑问及其回答式
(1) 否定式:be后面加not(any)或no。如:
There are not any boats on the river. 河上没有船。
(2) 疑问句:把be移到there之前。如:
Were there many boats on this river? 过去这条河上有许多船吗?
回答:Yes, there were. / No, there weren’t.
五.句子种类
(一) 陈述句
陈述句的否定结构:
陈述句的否定式主要用两种结构来表达:
(1)句子的谓语动词为be , have 或者谓语动词有助动词、情态动词时,其否定结构为: 主语+谓语动词/助动词/情态动词 + not + 其他成分
I am not a teacher. 我不是老师。
We have not (haven`t) any books on animals. 我们没有任何有关动物方面的书。
The children are not (aren`t) playing in the playground. 孩子们没在操场上玩。
He will not (won`t) come. 他不会来。
We must not (mustn`t) forget the past. 我们不能忘记过去。
It could not (couldn`t) be lost. 它不可能丢的。
(2) 当句子的谓语动词是do (即行为动词),而且没有助动词或情态动词时,其否定结构为:主语+do (does,did) + not + 动词原形 + 其他成分
You do not (don`t) come here every day . 你没有每天都来这里。
He does not (doesn`t) teach this class . 他不教这个班。
They did not(didn`t) watch TV last night . 昨晚他们没看电视。
注意:陈述句的语调一般用降调。但在表示疑问的语气时,用升调,在书面上要用问号来表示。
You really want to go to Hong Kong ? 你真的想去香港吗?
这句话表示的是一种疑问,只不过是通过陈述的语序和疑问的语气来表达的
(二) 疑问句
疑问句是用来提出疑问的句子,句末用问号―?‖。常考的疑问句有四类,即:一般疑问句、特殊疑问句、选择疑问句、反意疑问句。
第一节 一般疑问句
一般疑问句通常需要用yes 或no 来回答,所以又叫做―是非疑问句。在读这种句子时 要用升调。一般疑问句主要有以下几种类型:
1、―be + 主语 + 表语‖结构
— Are you sleepy ? 你困了吗? — Yes, I am . 是的,我困了。
3、―情态动词 + 主语言+ 行为动词(或be)‖结构
— May/Can I use the telephone? 我能用这部电话吗? — Yes, you can. 是的,可以。
5、―助动词(do, does, did)+ 主语 + 行为动词‖结构
— Do you like swimming in summer? 你喜欢夏天游泳吗? — No, I don`t . 不,我不喜欢。 难点提示
回答否定性一般疑问句时,要在Yes 后面用肯定结构,表示肯定;在No 后面用否定结构,表示否定。注意在说法上正好与汉语习惯相反。诀窍是在回答的时候,只要把它当成没有加否定形式的普通一般疑问句看待就可以了。注意下面例句的回答和它的意思。
— Is he not your elder brother? 他不是你的哥哥吗?
—Yes, he is . 不,他是(我的哥哥)。No, he is not. 是的,他不是(我的哥哥)。 — Isn`t she very clever? 她难道不是很聪明吗?
— Yes, she is. 不,她很聪明。 — No, she is not . 是,她不聪明。
第二节 特殊疑问句
一、特殊疑问句是用来提出来特定问题的疑问句,要求听到问题的人针对特定情况来做具体的回答不能用Yes或No来回答的问句,句尾读降调。(由五个W一个H来引导特殊疑问句)
二、特殊疑问句的结构:
特殊疑问词 + 一般疑问句
Who do English homework in the evening?谁晚上做英语家庭作业?
What do you do in the evening?你晚上做什么?
What homework do you do in the evening?你晚上做什么家庭作业?
When do you do English homework?你什么时候做英语家庭作业?
三、注意:
对人提问时who―谁‖
对所属(谁的)提问用whose―谁的‖
对哪一个提问用which―哪一个‖
对时间提问用when―什么时候‖或what time―几点‖
对物体提问用what―什么‖
对地点提问用where―哪里‖
对原因提问用why―为什么‖
对方式提问用how―怎么样‖
对数量提问用how many―多少‖(用于可数名词复数)或how much―多少‖(用于不可数名词)
四、难点提示
1、 以why开头的特殊疑问句否定形式常用于表示建议、请求等。 Why don`t you have a try? 你为什么不试试呢?
2、 特殊疑问句常用到一些缩略形式,在平时学习中要注意习惯这些用法。
I don`t want to go there. How about you? 我不想去那儿,你呢?
But what else? 可是还有什么呢?
(三)祈使句:表命令、警告、提醒、建议、请求、叮嘱、号召等,谓语动词用原形。主语you通常省略,句末用叹号或句号。肯定式以动词原形开头,否定式在动词原形前加don’t. 如: Don’t arrive late for class. Practice the guitar every day.
为了表示礼貌,常在句首或者句末加please,在句末以“,”隔开。
如:come in,please. Please call me!
Let’s祈使句: 包括听话者本人在内,表示建议。如:Let’s go home. 我们回家吧!
(四)感叹句
感叹句是表达喜、怒、哀、乐以及惊奇、惊讶等强烈感情的句子。感叹句通常由 what 或 how 引导。"what"和"how"与所修饰的词置于句首,其它部分用陈述句语序。
打油诗一首
或what an
形后若是不可数或名复数
只用what就可以
形容词后乱糟糟
只写how就OK了
六.情态动词:是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。
can的基本用法:
1. 表示能力。I can speak English. 我会讲英语。
2. 表示许可。You can play football on weekends. 你可以在周末踢足球。
3. 表示请求。Can you help me? 你能帮助我吗?
must表示“必须”。 You must read a book before you watch TV.
have to表示“不得不”,“必须”,如We have to be quiet in the library. 二者区别:
1. must表示说话人主观的看法,have to往往强调客观需要。
如:I must go.
It is a little late and I have to go now.
2.否定意义不同:mustn’t 表示“禁止”,而don’t have to 表示“不必”。 You mustn’t talk to your mother like that.
You don’t have to come if you don’t want to.
3.must 没有人称和数的变化,但have to有
I/You/They must do it now.
She has to finish her homework today.
八.介词
介词是一种虚词,它不能单独担任句子成分,必须与名词或代词或相当于名词的其他词类、短语或从句构成介词短语,才能担任句子成分。
1. 表示时间的介词at,in,on
A. at:用于表示时刻、时间的某一点
at 6 o’clock 在6点 at lunch在午饭时 at breakfast早餐时
at noon正午时 at that time那时
B. on用于表示某天,某一天的上、下午(指具体的某一天,一律用on)
on Monday在周一 on Tuesday morning在周二早上 on June 6 在6月6日
C. in用于表示周、月、 季节、年和泛指的上午、下午、晚上(指在一段时间内) in the afternoon在下午 in the week在这周 in the holiday在假期中
D. for 后面跟一段时间: for two days/hours
2. 表示场所、方向的介词at,in,on
A. at在某地(表示比较狭窄的场所, 小地方) at school上学 at home在家
B. on在...上面,有接触面 on the desk 在桌子上面 on the map在地图上
C. in表示一个范围(大地方) in Beijing/China in the water
3.固定搭配
By+交通工具 by bus/ train/plane/bike/subway
重点:动词和介词的连用,如:
arrive at/in 到达 ask for 请求 get off 下车 listen to 听
help sb with sth 帮助某人做某事 talk about 谈论 look at 看;注视
附: 形容词、副词的比较级和最高级的用法: 当两种物体之间相互比较时,我们要用形容词或副词的比较级; 当相互比较的物体是三个或三个以上时,我们就要用形容词或副词的最高级。
※形容词、副词的比较级和最高级的变化规律:
1. 单音节形容词或副词后面直接加-er或-est
tall—taller—tallest fast—faster—fastest
2. 以-e结尾的单音节形容词或副词直接加-r或-st
large—larger—largest nice—nicer—nicest
3. 以-y结尾的形容词或副词,改-y为-i再加-er或-est
busy—busier—busiest early—earlier—earliest
4. 形容词或副词是重读闭音节时,双写最后的辅音字母,再加-er或-est
hot—hotter—hottest big—bigger—biggest
5. 多音节形容词或副词前面直接加more或most
delicious—more delicious—most delicious
beautiful—more beautiful—most beautiful
6. 不规则变化
good (well)—better—best bad (badly)—worse—worst
many(much)-more-most little-less-least
⑥ .
1、 比较级+than从句表示两者比较( A … 比较级+than B )
①. 他比我高。He is ________ (tall) than me.
②. 他的头发比我的短。His hair is ________(short) than _________.
He has ________ (short) hair than ________.
③. Tom比我胖。 Tom is _____ (fat) than me.
④. 谁跑得快些,Lucy 还是Lily? Who runs _________, Lucy or Lily?
⑤. 英语比语文重要。English is _______________ (important) than Chinese.
⑥. 我来的比你晚。I come _______ (late) than you. ⑦. 他比你小2岁。He’s 2 years _________ than you.
⒉ 表示两者“相等”用,as+形容词原级+比较对象: (A … as 原级 B )
①他和我一样高。 He is as ________ (tall) as I/me.
②英语比语文重要。English is as _______________ (important) as Chinese.
③他的头发和我的头发一样长。His hair is ________ ________ _______ mine.
④他学习和你一样努力。He works _______ hard ______ you.
⒊ 表示“不如”, “不相等”时,用“not+as/so+形容词原级+as+比较对象”。
①他没我高。He is ______ ________ (tall) as me.
②今天没有昨天暖和。Today is ______ _______ _______(warm) _______ yesterday. =Yesterday ______ ________ than today. ③他昨天来得没有我早。He _________ come ________ early as I (did) yesterday.
比较级前可用much / a lot / far(… 得多), a little(稍微) ,still, no, even(甚至), any 等表示程度;
形容词、副词前如有:very, too, quite(非常), rather(相当)等修饰,一般用原级。 比较: He is much ___________( well) today. It’s much ____________ (expensive).
He is very __________ (well) today. It’s too ___________ (expensive) △⒋“比较级 +and+ 比较级”表示“越来越…”
天气越来越冷了。It’s getting ______ and _______(cold)
△⒌ “The+ 比较级…,the+ 比较级…”表示“越…,就越…
越多越好 The ________, the _______.
△⒍ “用twice 等表示倍数的词+ as +原级+as…”表示甲是乙的几倍。
这间房是那间房的两倍。This room is _______ as big as that one.
Ⅲ. 形容词最高级的用法:
表示三者或三者以上(人或物)的比较,其中有一个超过其他几个。形容词最高级前要加the,后面通常带of(in)短语来说明比较的范围(of 后的名词或代词表示与主语属同一类;in 表示时间或空间范围)。
①在我们班上他最高。 He is __________ ( tall) _____ our class.
②玛丽是这三个学生中最小的。
Mary is __________ (young) ______ the three students.
主谓一致
主谓一致是指谓语动词与主语在人称和数上保持一致
一 单项选择:
1. Eating vegetables______ good for our health.
A. is B. are C. were D. was
2. More than one person _______ made the suggestion.
A. was B. has C. were D. have
3. I think ______ of the materials I listened to at the beginning of the exam ______ easy.
A. two thirds; is B. second three; are C. two thirds; are D. two third; are
4. Neither you nor Lin Hua _______ to the Great Wall before.
A. had been B. has gone C. has been D. have been
5. The writer and teacher ______ coming now.
A. is B. are C. has D. have
6. Something _____ gone wrong with my TV set.
A. has B. have C. is D. are
7. Nothing but grass and trees _______ the hill.
A. covers B. cover C. covering D. are covering
8. Physics ______ more interesting than Maths, I think.
A. are B. is C. was D. were
9. Each student and each teacher ______ to see the film.
A. go B. wish C. are D. wants
10. Either Tom or I ______ to blame.
A. to be B. am C. are D. is
11. There ______ a desk, two beds and four chairs in the room.
A. is B. are C. has D. have
12. Lucy, together with her two brothers, often _______ to the park on Sundays.
A. go B. goes C. are going D. is going
13. There ______ a pair of shoes on the floor. The shoes______ mine.
A. are; is B. is; is C. is; are D. are; are
14. None of that money on the table ______ mine.
A. is B. are C. been D. have
15. — Could you get me a piano, Mum? —There ______ enough room for one in our home.
A. is B. are C. isn’t D. aren’t
16. The family I am staying with _______ very friendly.
A. is B. are C. was D. were
17. Our team ______ the World Cup!
A. has won B. have won C. are won D. is won
18. Our country _______ great changes in the last 30 years.
A. experience B. experiences C. has experienced D. experiencing
19. The police _______ having a meeting in their office at ten yesterday.
A. is B. are C. was D. were
20. The number of people invited _____ 50, but a number of them _____absent for different
reasons.
A. were; was B. was; was C. was; were D. were; were
21. A library with 5000 books _____ to the nation as a gift.
A. is offered B. has offered C. are offered D. have offered
22. I told him what I was surprised ______ his attitude towards his study.
A. is B. was C. at is D. at was
23. On the wall ______ two large portraits(肖像).
A. hangs B. hang C. hanged D. are hung
24. All that can be done ________.
A. has been done B. has done C. have done D. were done
25. The singer and the dancer ______ come to the meeting.
A. has B. have C. are D. is
26. I have finished a large part of the book; the rest ______ more difficult.
A. is B. are C. was D. were
27. The wounded(伤员) _______ by the hospital.
A. has taken in B. has been taken in C. have taken in D. have been taken in
28. The following _______ some other examples.
A. are B. is C. was D. were
29. The whole class _______ the teacher attentively(认真地).
A. are listening B. is listening to C. are listening to D. is listening
30. ―All _______ present and all _______ going on well,‖ our manager said.
A. is; is B. are; are C. are; is D. is; are
31. The rich ________ not always happy.
A. are B. is C. has D. have
32. He is the very thief that the police ________.
A. is after B. is looking C. are after D. are looking
33. The third and last chapter(章节) _______ by Professor Chen.
A. are written B. are writing C. is written D. is writing
34. One third of the students in our school _______ girl students.
A. is B. are C. was D. were
35. Many a writer of newspaper articles ________ to writing novels.
A. has turned B. have turned C. being turned D. are going to turn
36. None of your projects ________.
A. working out B. work out C. is worked out D. worked out
37. Going to bed early and getting up early _______ a good habit.
A. is B. are C. were D. was
38. I don’t think one hundered dollars _______ a big sum of monny to him.
A. will be B. would be C. is D. are
39. Neither of your suggestions ________ sense. (make sense:有意义;说得通)
A. makes B. make C. is made D. are made
40. Your trousers _______ dirty; you must have ______ washed.
A.is; it B. are; it C. are; them D. is; them
二 用所给词的正确形式填空:
1. ______ (be) everything OK?
2. Nobody _______ (know) the answers to the question.
3. Ten divided by two ________ (be) five.
4. Most of the drinking water _______ (be) from the Black River.
5. Not only she but also I _______ (do) morning exercises every day.
6. Either you or he ______ (have) made a wrong decision.
7. The family _______(be) spending the weekend together.
8. Bread and butter ______ (be) her daily breakfast.
9. The police _______ (be) trying to catch the thief.
10. The number of the teachers in the school ______(be) 120.