七年级下英语语法知识预习整理。以下是七年级下英语语法知识预习整理,供同学们预习。
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七年级下英语语法知识预习整理思维导图模板大纲
一. 情态动词can的用法
can+动词原形,它不随主语的人称和数而变化。
1. 含有can的肯定句:主语+can+谓语动词的原形+其他。
2. 含有can的否定句:主语+can't+动词的原形+其他。
3. 变一般疑问句时,把can提前:Can+主语+动词原形+其他? 肯定回答:Yes,主语+can。否定回答:No,主语+can't.
I can speak English.→I can't speak English.→Can you speak English? →What can you speak?
二. what time和when引导的特殊疑问句
1. 询问钟点时用what time,询问日期、月份、年份时用when。
2. What's the time?=What time is it?现在几点了?
顺读法:"钟点+分钟"直接读数字。
如:7: 05 seven five;8:16 eight sixteen
逆读法:借助介词past或to表示,要先说分再说钟点。
a. 当分钟不超过30分钟时(包括30分钟),即<或=30,用past表示。其结构为:"分钟+past+整点" 意为"几点过几分"。
如:1:25 twenty-five past one
b. 当超过30分钟时,即>30,用to表示。其结构为:"所差分钟(即60—所 过分钟数)+to+下一个整点",to译成"差",差几分钟到几点。
如:4:38 twenty-two to five
c. 当分钟为30分钟用half表示,当分钟为15分钟用a quarter。
三. how引导的特殊疑问句
a. take a/an/the+交通工具(单数)
b. by+交通工具(单数)
c. on/in+限定词+交通工具
---How do you go to school every day?
---I take a bus to go to school every day./I go to school by bus every day./I go to school on the bus every day.
(1)用长度单位表示:It is five kilometers.
(2)用时间表示:It’s twenty minutes’walk.
----How long have you learnt English?
----For 3 years.
----How soon will you arrive in Beijing? ----In 3 hours.
四. 祈使句
祈使句一般表示请求、命令、劝说、号召、警告等。一般以动词原形开头,句末可以用感叹号或句号。
(1) 实义动词原形+其他 :Please look at that boy.
(2) be动词原形+形容词+其他:Be quiet, please.
(1) Don’t+实义动词+原形 Don't stand there.
(2) Don’t be+形容词+其他 Don't be so noisy.
(4) No+n./V-ing
No photos. 不许照相。
No talking. 不许谈话。
五. 现在进行时
现在进行时指当前时间正在发生的动作。常与now,at this moment,listen,look等词连用。
谓语动词结构:be+动词ing形式
They are having class.
He is eating lunch.
变为否定句直接在be动词之后加not,其他不变;变为一般疑问句直接把be动词提到句首,其他不变。
They are having class.→They are not having class.→ Are they having class?
He is eating lunch.→ He is not eating lunch. → Is he eating lunch?
六. There be结构
There is a book on the desk.
On the desk there is a book.
The man has two cars.
There are some pens and a book on the floor. =There is a book and some pears on the floor.
七. 选择疑问句
选择疑问句是指说话人提出两种或以上的情况,让对方选择是哪一种,两个选择部分用or连接。选择疑问句不用yes或no来回答,直接在两个选择里选一个回答。
---Is she tall or short? ---She is tall.
---Can you play the piano or play the guitar? ---I can play the piano
八. 名词
在英语里面,名词分可数名词(countable noun)和不可数名词(uncountable noun)。不可数名词没有单复数之分,用时只当单数词用;可数名词有单复数之分,一个的前面要用a或an,eg: a pencil, a basketball, a dictionary, an egg, an ID card,而复数即两个或两个以上的要作相应的变化,情况如下:
(1)一般的词在单数词后直接+"s"
book→books,pen→pens,car→cars,map→maps,cartoon→cartoons
(2)以s,x,sh,ch结尾的词+"es"
box→boxes,watch→watches
(3)以辅音字母+y结尾的名词去掉"y",改成"i",再加"es"
family→families,comedy→comedies
(4)以f或fe结尾的词,先去掉f或fe,改成"v"再加es
knife→knives,wife→wives,handkerchief→handkerchieves
(5) 特殊词,特殊变化,需单独记:
child→children,man→men,foot→feet,woman→women
tooth→teeth,sheep→sheep,deer→deer
chicken当"鸡肉"讲时是不可数,当"小鸡"讲时可数;
room当"空间"讲时不可数,当"房间"讲时可数;
fish当食物用"鱼、鱼肉"讲时不可数,当"鱼的种类"讲时可数;
hair泛指"毛发"时不可数,当"一根或几根毛发"讲时可数;
sound意思是"一般性的声音"时,不可数,指"一次发出的声音"时可数;
paper当"纸"讲时不可数,当"试卷"、"论文"、"证件"讲时可数;
time当"时间"讲时不可数,当"时代、倍数、次数"讲时可数;
exercise泛指"锻炼"时不可数,当"练习、做操"讲时可数
九. 一般过去时
一般过去时表示在过去某个时间所发生的动作或所处的状态(与现在无关) 。常与yesterday, last week, in 1989, just now, a moment ago, the other day等过去具体时间状语连用。
He was here just now.
他刚才还在这里。
What did you do yesterday?
你昨天做了什么事?
一般过去时基本结构
I was an English teacher one year ago.
一年前我是一名英语老师。
I bought a yellow dress yesterday afternoon.
昨天下午我买了一条黄裙子。
I wasn't an English teacher one year ago.
一年前我不是一名英语老师。
I didn't buy a yellow dress yesterday afternoon.
昨天下午我没买一条黄裙子。
Were you an English teacher one year ago?
一年前你是一名英语老师吗?
Did you buy a yellow dress yesterday afternoon?
昨天下午你买了一条黄裙子吗?
What were you one year ago?
一年前你是做什么的?