人教版 丨七年級下冊英語下Unit 4 重點知識講解!


人教版 丨七年級下冊英語下Unit 4 重點知識講解!


Step1考點知識梳理

Section A

I. Don’t eat in class!

Don't + 動詞原形構成否定祈使句。

Don't talk in class. 在上課時別講話。

Don't be afraid. 不要害怕。

. rule

1. 作名詞:規則;法規;規定

the rules of tennis 網球規則

The school rules must be obeyed. 學校的規定必須遵守。

Don’t break the rules. 不要違規。

2. 作動詞:統治、裁決

Who rules this country? 誰統治這個國家?

The judge rules that he must leave. 法官裁定他必須退出。

Ⅲ.

be late for 做某事遲到了

==arrive late for

I arrived (was)late for the meeting yesterday. 我昨天開會遲到了。

. fight: fought fighting

1. 作動詞: 打仗,戰鬥,打架,抵抗

People have to fight for their liberty. 人們不得不為自由而戰。

He and his wife are always fighting about who will take after the children. 他與他妻子

總是在為由誰來照看孩子而吵架。

2. 作名詞:打仗,鬥志,戰鬥力

There’s no fight left in him. 他已經毫無戰鬥力。

The two boys had a fight. 兩個男孩打了一架。

. outside

副詞,表示“在外”,“向外”的意思。如:

It's dark outside. 外面很黑。

其它用法:

①作名詞,指“外部”。如:The outside of the building is white. 建築物的外部是白色的。

②作形容詞,“外邊的”。如:

Outside people know nothing about it.

外邊的人們什麼也不知道。

③作介詞,“外部”,“在...外面”。如:

My teacher parked his car outside the gate.我的老師把車停在門外。

注:outside 的反義詞為inside。

. 情態動詞have to的用法,意思是"必須、不得不",它側重於客觀上的必要和外界的權威。

(1)結構:主語+have to+動詞原形+其他

(一般現在時,主語是第三人稱單數時,用has to;句子是過去時,用had to.)

如: Tom has to practice the guitar every day.湯姆每天必須練吉他。

練習(漢譯英):

上週一,我不得不早上5 點起床。

(2)否定形式:主語+don't have to+動詞原形+其他“不必”

(一般現在時,主語是第三人稱單數時,用doesn't have to. 句子是過去時,用didn't

have to)

如:Nick doesn't have to wear a uniform.

我們不必馬上完成作業。

(3)疑問句:Do (Does 或Did)+主語+have to +動詞原形+其他

如:Do you have to stay at home on weekends? Yes, I do. / No, I don't.

昨晚,他不得不11 點前上床睡覺嗎?

Ⅶ. 情態動詞can的用法。

1 表示能力,"會""能"

Can you play the guitar? I can dance and sing.

2 表示允許、許可,"可以"、"能"

Can the students run in the hallways?

We can eat outside. Can I come in?

注意:can 和have to 的區別,can 沒有人稱和數的變化。

Ⅷ. else

1. 作形容詞,表示“別的,其他的”

Ask somebody else. 問問別人。

Would you like something else? !

還要再要些別的嗎?

2. 作副詞,表示“另外,其他”

When else can we come again?

我們什麼時候還能來呢?

We went to the museum and nowhere else. 我們到博物館去了,其他什麼地方也沒去。

Section B

I. on school nights 在上學日的晚上

We shouldn't watch TV too late on school nights. 在上學的晚上我們不應看電視看得太晚。

. too many “太多”的意思

Too many cooks spoil the broth (肉湯). 人多誤事。

He can't stand too many rules. 他忍受不了太多的規矩。

. in bed 表示“在床上,臥床”的意思。

The old man sat up in bed. 這位老人在床上坐起來。

Don't read in bed. 不要躺在床上看書。

. by的用法:

by 為介詞=not later than “不遲於…”。

如:I'll be back by 6 o’clock.我最遲六點鐘回來

Ⅴ. No talking! “不要說話!禁止交談!”

No+名詞或動名詞(doing)“不要做某事”與Don't +do 的用法相似。

No food! = Don't eat food here!

No smoking!= Don't smoke here!

Step2重點難點解析

難點一、hear/listen/sound的區別

1. hear “聽說”,側重於“聽”的內容

I'm sorry to hear that you are ill. 聽說你病了,我很難過。

I never heard such an interesting story. 我從來沒有聽說過這麼一個有趣的故

事。

2. listen“聽”,側重於“聽”這一動作

Listen to me carefully. 認真聽我說。

The children like to listen to music. 孩子們喜歡聽音樂。

3. sound “聽起來”,它是系動詞,後面接形容詞

That sounds great. 那聽起來真不錯。

It sounds like fun. 聽起來了挺有趣。

難點二、musthave to 的區別

1. 都可以翻譯為必須,但是have to 用於強調客觀需要“不得不”;must 表

示主觀看法“必、應該”

We’ll have to ask Zhang Hong instead. 我們必須要去問張鴻了。

We must work hard at school. 在學校我們必須努力學習。

2. have to 有人稱、數和時態的變化,而must 只有一種形式。

3. 在否定結構中: don't have to 表示“不必”

mustn't 表示“禁止,決不能”

You don't have to tell him about it. 你不一定要把此事告訴他。

You mustn’t tell him about it.你一定不要把此事告訴他。

難點三、too many/too much/ much too 的辨析

1. too many 的中心詞是many, too 用來修飾many,用法與many 相同,用來

修飾複數可數名詞

He's got too many questions to ask you. 他有很多問題要問你。

They bought too many eggs yesterday. 昨天他們買了太多的雞蛋。

2. too much 的中心詞是much,用法與much 相同,用來修飾不可數名詞。

We both have too much work to do.

我們倆都有很多工作要做。

She spent too much money on clothes.

她花太多錢買衣服。

The teacher told him not to spend too much time playing games.

老師叫他不要花太多時間玩遊戲。

3. much too 的中心詞是too, 用來修飾原級形容詞和副詞;much 在其中是用

來修飾too 的。

You're walking much too fast. Slow down. 你走得太快了,慢點。

I'm afraid that this cap is much too big for me. 這頂帽子我戴恐怕太大了。

It's much too cold outside.外面太冷了。

難點四、祈使句的用法

祈使句表示請求、命令、建議等等。謂語動詞一律用原形。句子中通常不用主語( 賓格),用降調。

一.類型

① V。Do it like this please.

② B. Be +表語Be careful !

③ L. Let sb do sth .

注意: Let's 包括對方,Let us 不包括對方。

Let's go,shall we?

Let us go,will you?

有時,為了加強語氣,可以在動詞之前加do e.g. Do study hard.一定要努力學習。

二.否定的祈使句句型:Don't +動詞原形

Don't swim in the river. Don't be late.別遲到。

注意:表示禁止時,尤其是標語等也可用“No+動名詞”來表示。No smoking.

No parking.禁止停車。

三.祈使句與陳述句的改寫

1.祈使句=You must …(陳述句)

Come here .過來。

=You must come here.你必須過來。

2.Please +祈使句

=Will you (please) …?(陳述句)

Please help me. 請幫幫我。

=Will you (please) help me?

你願意幫我的忙嗎?

Come here on time, please.

請準時到這兒。

=Will you (please) come here on time?

請你準時到好嗎?


分享到:


相關文章: