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初中英语重点语法(初中英语语法有哪些)

时间:2023-03-06 07:22:20

初中英语语法有:时态(日常如今时/如今进行时/日常来日时/日常过去时)、从句(宾语从句/定语从句/状语从句)、Can句型、There be、词类等等。

一、时态

日常现在时

概念:常常、频频爆发的手脚或行动及此刻的某种情况。

时间状语:always, usually, often, sometimes, every week (day, year, month…), once a week, on Sundays, etc.

根本构造:①be动词;②举动动词

否认样式:①am/is/are+not; ②此时态的谓语动词若为行动动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行动动词。

通常疑问句:①把be动词放于句首;②用助动词do提问,如主语为第三人称单数,则用does,同时,还原举止动词。

而今进行时

概念:示意现阶段或谈话时正在进行的行动及动作。

时间状语:now, at this time, these days, etc.

根本机关:am/is/are+doing

否认式样:am/is/are+not+doing.

普通疑问句:把be动词放于句首。

一样平常未来畴昔时

概念:默示将要发作的行动,或生计的状况及绸缪,计划或准备做某事

时间状语:tomorrow,next day,soon,in a few minutes....

根基布局:1、be going to 2、will/shall do

否认:1、 was / were not 2、举动动词前加didn't,同时还原举动动词

平常疑问句:1、be 放于句首 2、will /shall 提于句首。

寻常过去时

概念:以前某个时间里发作的行为或状况;以前习惯性、经常性的行为、动作。

时间状语:ago, yesterday, the day before yesterday, last week(year, night, month…), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc.

根基机关:①be动词;②举动动词

否认步地:①was/were+not;②在行动动词前加didn't,同时还原行动动词。

日常疑问句:①was或were放于句首;②用助动词do的过去式did提问,同时还原动作动词。

二、从句

宾语从句

①界说

在句子中起宾语效用的从句叫做宾语从句。

②连接词

that: I think that you can pass the exam.

Whether/if:I wonder if / whether I can get some advice from you.

Ask him whether / if he can come.

“Wh”: I don’t know what the word means.

I don’t know where he found the book.

只用whether的景况:

1. 与or not连用:

I don’t know whether it’s raining or not.

2. 与动词不定式连用:

He doesn’t know whether to accept the invitation.

3. 连接词前有介词时:

It depends on whether he is coming.

③时态

1. 主句是通常目前时态,从句依据实际情况而定(各样时态都可)

She wants to know what he has done for the exam.

2.主句是日常昔时时态,从句用响应的昔时的时态。

1)She said that she was a student.

2)She said that she would fly to Japan in a week.

3)She said that she had finished her homework already.

3. 假如宾语从句说的是客观真理、自然现象或事及时,这时宾语从句要用日常目前时态。

The teacher said that the earth goes round the sun.

定语从句

①界说

在复合句中润饰藻饰名词、代词的从句叫定语从句。

②先行词

先行词指人 who /that

先行词指物 which/ that

定语从句寻常紧跟被梳妆化妆的名词或代词(即先行词)后

③关联代词

关联代词代庖先行词在句子中承受因素,因而从句中不行再出现其他代庖先行词的代词

④翻译方式 “…. 的”

Whom: 先行词指人,则代庖先行词在定语从句中充任宾语(囊括介词的宾语), 与who的差异是假如前方带介词则必须用whom

1. This is the teacher whomwho we like best.

2. I don’t like the boy to whom you are talking.

Whose : 指人或物,作定语,默示 “…的”

eg: Harry is the boy whose mother is our math teacher.

关连代词只能 that 的特别情状:

1.先行词前有序数词点缀时:

This is the first gift that my parents bought me.

2.先行词前有形容词第一流点缀时:

This is the most exciting film that I have ever seen.

3. 先行词是不定代词something, anything等时.

e.g. Is there anything that you want in this shop

4. 先行词是人和物时, 用that.

e.g. He talked about some writers and books that were unknown to us all.

5. 先行词被all , little , the only , the very(即是,恰是), the last 等词润饰藻饰时,只能用that

e.g. This is the last place that I want to visit.

6. 特别疑问句以who 或which 结尾,只能用that向导.

Who is the girl that is making a speech on the platform?

当关连代词前使用介词时:

物+介词+which ; 人+ 介词 + whom

当关连代词前使用介词时:

e.g. 1. This is the train by which we went to Beijing.

2. This is the teacher to whom my mother is talking.

状语从句

①界说

在复合句中由从句默示的状语称作状语从句,它能够用来点缀谓语(囊括非谓语动词)、定语或状语,或是全数句子。

②状语从句平常分为八大类

时间状语从句 所在状语从句

因为状语从句 方针状语从句

了局状语从句 前提状语从句

形式状语从句 倒退腐败状语从句

1. 时间状语从句

When ---当……时刻, 通常指某一特定的时间点,主句与从句的手脚同时发生。

When I opened the window, I saw him come up.

When --- 正在……的时刻,忽然…。一贯主句是进行时或 be about to 时,在翻译的时刻,when 能够译成没想到或忽然。

I was walking along the street , when I met him.

When 当从句是进行时,主句是通常时,常常示意不悦。

Someone knocked at the door when I was having breakfast.

When=after

When the children had gone to bed, she began to prepare her lessons.

While ---在……时刻,时常指一段时间。

While we were inAmerica, we saw him twice.

While ---透露表现一种生气心思,意思是这里在干某种重要的事,而另一边在享福等。

We are cleaning the classroom while they are playing the football.

As --- 一面……一面, 跟着

She was doing her homework as she was listening to the music.

As --- 当……时,指一个行动紧接着一个行动发作,从句通常用进行时。

As I was going out, it began to rain.

The moment --- 一……就…… =as soon as , immediately,

---Did you remember to give Mary the money you owed her?

---Yes, I gave her the moment I saw her.

Not… until --- 直到……才

He didn’t leave the office until he finished the work.

Before --- 在……以前

The passengers should arrive at the airport an hour before the flight departs.

After --- 在…… 之后

The customer left the ticket counter after he had a quarrel with the ticket agent.

Since ---自从……, 平日主句用现在完成时

I have never been there again since I graduated from the university.

It is just a week since we arrived here.

As soon as --- 一……就……

Jack went to school as soon as he got well.

No sooner than --- 一……就……

no sooner… than… 用于句首请求倒装

Hardly …when…

Scarcely …when…

No sooner had he arrived than he went away again.

Once --- 一但……就……

Once you see him, you will never forget him.

Every time, each time 每次whenever 每当

Each time he came to town, he would visit our school.

2. 前提状语从句

开导状语从句的连接词有:

If假如, unless除非, as long as只有, As (so) far as --- 据……所知,in case万一, provided that假若, on condition that如果,以…为条目

If ---假如

If you don’t hurry up, you will miss the plane.

Unless --- 若是不, 除非=if not

We can’t get there on time unless we book the earliest flight

As long as --- 只有

We will succeed as long as we keep on trying.

As (so) far as --- 据……所知

As far as I know, he speaks English very well.

In case --- 假如, 若是

The plane cannot take off in case it rains.

Provided that 若是,偶尔节略 that

The plane will be in good condition provided that it is taken care of carefully.

On condition that --- 条目是…

He said that he would come to the meeting on condition that no one asked him to speak.

注:主从句的行动产生在异日时,则主句用异日时, 从句用平常现在时。

If he arrives tomorrow, I will be waiting for him at the airport.

3. 所在状语从句

所在状语从句只要两个连词: Where, wherever

Where --- 在……地点

Where there is a will, there is a way.

Wherever --- 不论那儿

Wherever you are, I will be right there waiting for you.

4. 来由状语从句

because, as, since, now that, 和considering that, seeing that 这六个连词都用于暗示暗示理由, 但在口气上一个比一个弱.

Because --- 由于,往往从句放在主句后.

Mr Smith was very upset because he couldn’t find his luggage.

As --- 原因, 一般放在句首

As he is honest and modest, all his friends like him.

Since ---既然 因口气较弱, 常译为既然(家喻户晓的来由)

Since everybody has come, we can set off.

Now that --- 既然

Now that you are here, you can join us.

considering that --- 顾及到

Considering that they are just beginners, they are doing quite a good job.

seeing that --- 因为

Seeing (that) quite a few people were absent, we decided to put the meeting off.

5. 终局状语从句

开导结局状语从句的连词有:that, so that, so…that…

such…that So… that --- 太……以至于 so 背后应用形容词或副词, 无意节略so只用that

Boeing 747 is so large that people like to call it jet bomb喷气炸弹.

So that --- 是以,以便,为了 偶然so 可以省去

Speak louder please so that the people at the back can hear you.

Such …that… ---太……以至于 用法与so…that相通,但such 后背应用名词。

The foreign visitor was such a fast speaker that nobody could understand him.

6. 宗旨状语从句

启发目标状语从句的严重连词有: that, so that, in order that, for fear that, lest

(So) that --- 以便, 从句中经常使用部分情态动词,如:can, could, may, might, should等

Let’s take the front seats (so) that we may see more clearly.

in order that --- 为了, 与so that 沟通从句中经常使用部分情态动词,如:can, could, may, might, should等

School was closed early in order that the children might go home ahead of the storm.

for fear that --- 只怕; 为了避免(某事爆发)

He took the name down for fear that he should forget it.

in case --- 万一

You should bring a dictionary in case you need it.

Lest --- 以防万一

The man decided to tell his boss the fact lest he would be angry with him.

7. 倒退腐败状语从句

启发退让状语从句的连词有:Although, though, as, even if, even though, no matter, however, whatever, while, whether.

Although, though ---尽管 although 和though 能够交流,但although 常放在句首。Though能够用于倒装。

Although it was raining, the plane managed to take off.

Though he did his best, he didn’t succeed.

As --- 尽量 as 开导倒退腐败状语从句时,句子每每倒装。可与though 交换。

Busy as he is, he never misses a football match.

Even if /even though ---纵使

Even if you don’t like your boss, you should do your work.

However --- 无论, however 向导倒退腐败状语从句时,句子一贯倒装

He couldn’t get there on time however fast he drove.

No matter (what, when, where, how) ---非论(甚么,何时,何地,怎么样)

He wouldn’t forgive me no matter how hard I begged him.

Whatever --- 无论

Whatever other people may say, she won’t change her mind.

While ---纵然

While I have sympathy for you, I can’t help you.

Whether ---无论,常与or not 连用

Whether he is good or not, the company decided to send him abroad.

8. 式样状语从句

体例状语从句常由: as, as if, as though

as ---与…… 相通

Do in Rome as the Romans do.

as if, as though --- 如同, 由as if或 as though开导的从句中可用虚拟语气

She stood at the door as if (=as though) she were waiting for someone。

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