學(xué)習(xí)英語(yǔ)語(yǔ)法是很多人的痛點(diǎn)，今天小編給大家?guī)?lái)了新概念英語(yǔ)第一冊(cè)語(yǔ)法知識(shí)點(diǎn)之情態(tài)動(dòng)詞的使用，希望能夠幫助到大家，下面小編就和大家分享，來(lái)欣賞一下吧。

新概念英語(yǔ)第一冊(cè)語(yǔ)法知識(shí)點(diǎn)之情態(tài)動(dòng)詞的使用

can, must, may, might, need

情態(tài)動(dòng)詞can(能夠)， must(必須)， may(可以)

結(jié)構(gòu)：主語(yǔ)+can/must/may+動(dòng)詞原型

He can make the tea.

Sally can air the room.

We can speak English.

★變疑問(wèn)句將情態(tài)動(dòng)詞移到句首

Can he make the tea?

Can Sally air the room?

Can we speak English?

★變否定句在情態(tài)動(dòng)詞后面加not

He cannot make the tea.

Sally cannot air the room.

We cannot speak English.

★肯定回答及否定回答

Yes, he can. No, he cannot.

Yes, she can. No, she cannot.

Yes, we can. No, we cannot.

★特殊疑問(wèn)句：

What can you do?

(必背)

注意：情態(tài)動(dòng)詞的句子沒(méi)有第三人稱(chēng)單數(shù)的變化，不要在情態(tài)動(dòng)詞或動(dòng)詞后面加S。

1)Must/have to的區(qū)別

must 表示必須，是主觀上覺(jué)得應(yīng)該做，have to是不得不，是由于客觀條件逼迫的必要要做

must 只能用在表示現(xiàn)在和將來(lái)的句子里，而have to do可以用在任何時(shí)態(tài)

2)must, may, might表示猜測(cè)：

must do 表示對(duì)現(xiàn)在事實(shí)的猜測(cè)

must have done表示對(duì)過(guò)去事實(shí)的猜測(cè)

must have been doing 表示對(duì)過(guò)去正在進(jìn)行的事實(shí)的猜測(cè)

may/might do, may/might have done表示沒(méi)有任何事實(shí)依據(jù)的猜測(cè)，might的可能性更小。

can’t/couldn’t 表示不可能

新概念第一冊(cè)語(yǔ)法講解：一般現(xiàn)在時(shí)

1、含有be動(dòng)詞的句子

He is a teacher.

The girl is very beautiful.

Tim and Jack are students.

★變疑問(wèn)句將be動(dòng)詞移到句首

Is he a teacher?

Is the girl very beautiful?

Are Tim and Jack students?

★變否定句在be動(dòng)詞后面加not

He is not a teacher.

The girl is not very beautiful.

Tim and Jack are not students.

★肯定回答及否定回答

Yes, he is. / No, he is not.

Yes, she is. / No, she is not.

Yes, they are. / No, they are not.

2、不含有be動(dòng)詞的句子，即含有一般動(dòng)詞的句子。

(1)第三人稱(chēng)單數(shù)及單數(shù)名詞

He likes books.

She likes him.

The dog likes bones.

★變疑問(wèn)句在句首加does, 動(dòng)詞變?yōu)樵?/p>

Does he like books?

Does she like him?

Does the dog like bones?

★變否定句在主語(yǔ)及動(dòng)詞之間加doesn't, 動(dòng)詞變?yōu)樵停渲械膭?dòng)詞不再有第三人稱(chēng)變化。

He doesn't like books.

She doesn't like him.

The dog doesn't like bones.

★肯定回答及否定回答：

Yes, he does. / No, he doesn't.

Yes, she does. / No, she doesn't

Yes, it does. / No, it doesn't.

注意：第三人稱(chēng)單數(shù)形式一般在動(dòng)詞后面加S，不要和名詞復(fù)數(shù)混淆，變否定句或疑問(wèn)句時(shí)名詞復(fù)數(shù)沒(méi)有任何變化。

(2)其他人稱(chēng)及復(fù)數(shù)名詞

I want to have a bath.

We have some meat.

The students like smart teachers.

★變疑問(wèn)句在句首加do

Do you want to have a bath?

Do we have any meat?

Do the students like smart teachers?

★變否定句在主語(yǔ)和動(dòng)詞之間加don't.

You don't want to have a bath.

We don't have any meat.

The students don't like smart teachers.

★肯定回答及否定回答

Yes, I do. / No, I don't.

Yes, we do. / No, we don't

Yes, they do. / No, they don't.

新概念第一冊(cè)語(yǔ)法講解：現(xiàn)在完成時(shí)

現(xiàn)在完成時(shí)

構(gòu)成：主語(yǔ)+助動(dòng)詞have, has+過(guò)去分詞

用法：

1) 表示過(guò)去發(fā)生的和現(xiàn)在有某種聯(lián)系的動(dòng)作，常和just, usually, already, since等時(shí)間副詞連用。

I have just had lunch. (飽了，不用再吃了。)

He has had a cup of tea.(不渴了，不用再喝。)

They have already had their holiday. (不能再度假了。)

The boy has already read the book. (已經(jīng)知道書(shū)的內(nèi)容了，不用再看了。)

2) 詢(xún)問(wèn)別人是否做過(guò)某事一般用現(xiàn)在完成時(shí)：

Have you finished your homework?

Have you been to Beijing?

Have he seen the film?

3) 表示開(kāi)始于過(guò)去并持續(xù)到現(xiàn)在的動(dòng)作

I have lived in Beijing for twenty years.

I have worked for this school for 1 year.

4) 表示一種經(jīng)歷，經(jīng)驗(yàn)：去過(guò)…地方，做過(guò)…事情，經(jīng)歷過(guò)…事情

I have never had a bath.

I have never seen a film.

I have never been to cinema.

I have ever been to Paris.

Have been to表示去過(guò)，have gone to 表示去了

I have been to London.(人已經(jīng)回來(lái))

He has gone to London.(人還在那里)

5) 表示一種結(jié)果， 一般不和時(shí)間副詞聯(lián)用

I have lost my pen.

I have hurt myself.

He has become a teacher.

She has broken my heart.

句型變化：

★變疑問(wèn)句將助動(dòng)詞移到句首，變否定句在助動(dòng)詞后面加not.

Have you lost your pen? I have not lost my pen.

★肯定回答及否定回答

Yes, I have. / No, I have not.

★特殊疑問(wèn)句

What have you done?

What has he done?

一般過(guò)去時(shí)與現(xiàn)在完成時(shí)的區(qū)別：

凡是有明確的表示過(guò)去的時(shí)間狀語(yǔ)的句子為過(guò)去時(shí)。

注意：有些動(dòng)詞表示的動(dòng)作有一個(gè)終點(diǎn)，不能再延續(xù)，因此不能和表示一段時(shí)間狀語(yǔ)連用。

錯(cuò)：I’ve left Beijing for 3 days.

對(duì)：I left Beijing 3 days ago. I have been away from being for 3 days.

新概念英語(yǔ)第一冊(cè)語(yǔ)法知識(shí)點(diǎn)：定語(yǔ)從句

定語(yǔ)從句

1.了解定語(yǔ)從句的構(gòu)成，首先應(yīng)了解一些相關(guān)的基本概念。

a.被修飾的名詞等成分通常叫做先行詞;b.連接先行詞和定語(yǔ)從句的詞為關(guān)系詞。

2.定語(yǔ)從句由關(guān)系代詞、關(guān)系副詞和關(guān)系限定詞三類(lèi)關(guān)系詞連接而成，這三種也將在定語(yǔ)從句講解中一一說(shuō)明。

定語(yǔ)從句講解關(guān)系詞的具體用法

1.關(guān)系代詞 which，who，whom，that 和 as

2.關(guān)系代詞，顧名思義，必有代替對(duì)象。上述五個(gè)關(guān)系代詞各有其具體指代對(duì)象，在從句中作相應(yīng)的成分。此外，它們引導(dǎo)的定語(yǔ)從句和先行詞是形容詞與名詞的修飾關(guān)系。

例句及翻譯

例句1:

Pumas are large，cat-like animals( that/which are found in America.)

【譯文】美洲獅是體形似貓的大型動(dòng)物，產(chǎn)于美洲。

【注解】關(guān)系代詞作從句主語(yǔ)，不可省略。

例句2:

The house (that/which we built last year) is very attractive.

【譯文】我們?nèi)ツ杲ㄔ斓姆孔雍苡懭讼矚g。

【注解】關(guān)系代詞作從句賓語(yǔ)，可省略。

例句3:

The novel (with/which most of you are familiar) has been adapted for the

screen.

【譯文】你們大多數(shù)都很熟悉的那部小說(shuō)已被改編搬上了熒屏。

【注解】關(guān)系代詞直接置于介詞后作介詞賓語(yǔ)，此時(shí)不可被that替換，也不可省略。

例句4:

He was no longer the reckless young man( that/which he was two years

ago).

【譯文】他不再是兩年前那個(gè)莽撞的小伙子了。

【注解】關(guān)系代詞作從句表語(yǔ)，可省略;此外，先行詞the young man代表一種狀態(tài)，屬物的范疇，不能用who來(lái)引導(dǎo)定語(yǔ)從句。

例句5:

Migrant workers(to whom much more attention has been paid) strongly desire

that their wages should be duly paid.

【譯文】現(xiàn)在民工受到了社會(huì)更大的關(guān)注，他們強(qiáng)烈渴望自己的工資能夠及時(shí)發(fā)放。

【注解】關(guān)系代詞直接置于介詞后作介詞賓語(yǔ)，此時(shí)不可被who替換，也不可省略。

例句6:

Such accommodations(as they could find) were generally expensive.

【譯文】他們能夠找到的這些住所費(fèi)用往往比較昂貴。

【注解】之所以選擇關(guān)系代詞as引導(dǎo)定語(yǔ)從句，是因?yàn)榍懊嬗衧uch之故。

例句7:

Such inns(as there were in the mountains) were generally poor.

【譯文】這些山區(qū)里的酒館條件往往比較糟糕。

【注解】之所以選擇關(guān)系代詞as引導(dǎo)定語(yǔ)從句，是因?yàn)榍懊嬗衧uch之故。 　　例句8:

This is the same mosquito(as bit you just now).

【譯文】這只蚊子和剛才咬你的那只是同一種蚊子。

【注解】之所以選擇關(guān)系代詞as引導(dǎo)定語(yǔ)從句，是因?yàn)榍懊嬗衪he same之故。

定語(yǔ)從句講解小結(jié)：

(1)一般來(lái)講，which和that用來(lái)替代指物的先行詞，在定語(yǔ)從句中可作主語(yǔ)、賓語(yǔ)或表語(yǔ)

(that不能作介詞后面的賓語(yǔ));who替代指人的先行詞，在定語(yǔ)從句中作主語(yǔ)或賓語(yǔ)(但不能

作介詞后面的賓語(yǔ));whom是who的賓格形式，替代指人的先行詞，在定語(yǔ)從句中只能作賓 語(yǔ);as作為關(guān)系代詞，只能用于一些特殊搭配(such... as/the

same... as)。

(2)that既可指物也可指人，但在當(dāng)代英語(yǔ)中，多指物。

(3)當(dāng)關(guān)系代詞在限制性定語(yǔ)從句中作賓語(yǔ)或表語(yǔ)時(shí)，經(jīng)常可省略，但當(dāng)which，whom 緊跟在介詞后則不可省略。

例如：

Is that the man(with whom you are going to set up a law firm)?

Is that the man(who/whom)(you are going to set up a law firm with)?

只能用that的情形

a.當(dāng)先行詞為 all,much,anything, something, nothing,everything, little,none 等不定代

詞，或先行詞被all，any，every等不定代詞修飾時(shí)，只能用that替代指物的先行詞。

例如：

①That'a all(that I ask for).

【譯文】這就是我要的一切。

②Is there anything(that I can do for you) ?

【譯文】我可以為您效勞嗎?

③Every tearo(that intends to participate in the contest) is to submit a fee

of 2000.

【譯文】每一個(gè)意欲參加比賽的隊(duì)伍都應(yīng)該繳納兩千元的費(fèi)用。

b.先行詞被形容詞最髙級(jí)修飾，或被the only,the first,the last,the next,the

very等修飾時(shí)，只能用that替代指物的先行詞。

例如： 　?、貶e eats the finest food(that is available).

【譯文】他吃的是所提供的最精美的食物。

②The first case of bird flu( that was reported in Thailand) captured the

attention of officials with WHO.

【譯文】泰閏報(bào)道的例禽流感引起了世界衛(wèi)生組織官員們的注意。

③This is the very book(that I have been hunting for a long time).

【譯文】這就是我長(zhǎng)期以來(lái)一直尋找的那本書(shū)。

c.先行詞既包括人，又包括物時(shí)。

例如：

①He is always talking brilliantly of the book and author(that interested

him)

【譯文】他對(duì)那本書(shū)及其作者很感興趣，總是興高采烈地談?wù)撝麄儭?/p>

② We were deeply impressed by the school and its teachers (that we had

visited there).

【譯文】我們?cè)L問(wèn)的學(xué)校和老師給我們留下了深刻的印象。

(5)只能用which的情形

a.用于介詞之后(可參見(jiàn)A例句3)。

b.用于非限制定語(yǔ)從句中。

新概念英語(yǔ)第一冊(cè)語(yǔ)法知識(shí)點(diǎn)：名詞性從句

名詞性從句

在句子中起名詞作用的句子叫名詞性從句 (Noun Clauses)。 名詞性從句的功能相當(dāng)于名詞詞組，

它在復(fù)合句中能擔(dān)任主語(yǔ)、賓語(yǔ)、表語(yǔ)、同位語(yǔ)、介詞賓語(yǔ)等，因此根據(jù)它在句中不同的語(yǔ)法功能，名詞性從句又可分別稱(chēng)為主語(yǔ)從句、賓語(yǔ)從句、表語(yǔ)從句和同位語(yǔ)從句。

分類(lèi)

引導(dǎo)名詞性從句的連接詞可分為三類(lèi)：

連詞(5個(gè))：that (本身無(wú)意義。引導(dǎo)單一的賓語(yǔ)從句時(shí)that?？墒÷裕龑?dǎo)主語(yǔ)從句、表語(yǔ)從句、同位語(yǔ)從句時(shí)that通常不被省略)

whether,if (均表示“是否”表明從句內(nèi)容的不確定性)

as if ,as though (均表示“好像”，“似乎”)

以上在從句中均不充當(dāng)任何成分

連接代詞(10個(gè))：what, whatever, who, whoever, whom, whomever, whose,whosever,

which, whichever

連接副詞(7個(gè))：when, where, how, why, whenever, wherever, however

不可省略的連詞：

1. 介詞后的連詞。

2. 引導(dǎo)主語(yǔ)從句和同位語(yǔ)從句的連詞不可省略。

That she was chosen made us very happy.

We heard the news that our team had won.

3. 在從句中做成分的連詞.

比較

whether與if 均為"是否"的意思。 但在下列情況下，只可用whether：

1. whether引導(dǎo)主語(yǔ)從句并在句首。

eg:Whether he can come to the party on time depends on the traffic.

2. 引導(dǎo)表語(yǔ)從句。

eg:The question is whether we can get in touch with her.

3. whether從句作介詞賓語(yǔ)。

eg:I am thinking about whether I should quit my present job.

4.if與whether都可以與or not 連用，但后面緊跟or not 時(shí)只能用whether。

We didn't know whether or not she was ready.(此時(shí)只能用whether)

I wonder whether/if the news is true or not.(此時(shí)則二者都可以用)

5.后面直接跟動(dòng)詞不定式時(shí)。

6.引導(dǎo)同位語(yǔ)從句時(shí)。

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