八年級下學期英語知識點總結

英語一直是很多國中生的薄弱科目，很多學生都覺得到了八年級下學期，英語知識的學習難度增加了。下面是本站小編為大家整理的八年級下學期英語知識，希望對大家有用!

　　八年級下學期英語知識點

1、 Will

1)表意願，用於各種人稱陳述句。I will do anything for you. 我願為你做任何事。 None is so blind as those who won't see. 不願看的人眼最瞎。

If you will read the這本書，我會把它借給你。

2)表請求，用於疑問句。

Will you close the window? It's a bit cold. 請你把窗户關上好嗎?有點冷。 Won't you drink some more coffee? 再來一點咖啡好嗎?

3)表示某種傾向或習慣性動作。

Fish will die out of water. 魚離開水就不能活。 The door won't open. 這門打不開。

The boy will sit there hour after hour looking at the traffic go by. 那男孩常常坐在那裏好幾個鐘點，看着車輛行人通過。

2、Should

1)表義務。意為

You should be polite to your teachers. 你對老師應該有禮貌。You shouldn't waste any time. 你不應該浪費時間。

2)表推測，意為

The film should be very good as it is starring first-class actors. 這部新電影是一流演員主演的，估計拍得很好。They should be home by now. 照説他們現在應當已經到家了。

3、Would

1)表意I said I would do anything for you. 我説過我願意為你做任何事。

2)表委婉地提出請求、建議或看法。Would you like another glass of beer? 再來杯啤酒好嗎?

Would you mind cleaning the window? 請把窗户擦一下好嗎?

They wouldn't have anything against it. 他們不會有什麼反對意見。

3)表過去反覆發生的動作或過去的一種傾向。Every time she was in trouble, she would go to him for help. 她每遇到麻煩都會向她求助。他告訴我盒子打不開了。

4、ought to

1)表義務，意為

2)表推測，暗含很大的可能，語氣較弱。

Han Mei ought to know his telephone number. 韓梅該知道他的電話號碼。

There's a fine sunset; it ought to be a fine day tomorrow. 今天有晚霞，明天應該是個好天。

5、 used to 表示過去的習慣動作或狀態，現在不復發生或存在。疑問式和否定式有兩種。

He used to live in the countryside, but now he lives in the city.他過去住在鄉下，現在住在城裏。

There used to be a building at the street corner, bn. 街道拐角處過去有座樓房，現在拆了。

I usedn't (didn't use) to smoke. 我過去不抽煙。

Used you (Did you use) to go to school on foot? 你過去常步行去學校嗎?

　　八年級必背英語知識

(一)need和dare的用法

need和dare既可用作情態動詞，也可用作實義動詞。用作情態動詞時，主要用於否定句和疑問句。用作實義動詞時，可用於各種句式。

1.用作情態動詞--Need I come? --Yes, you must. --我需要來嗎? --需要。 You needn't telephone him now. 你現在不必打電話給他。

I don't think you need worry. 我想你不必發愁。

She dare not go out alone at night. 她晚上不敢一個人出去。

How dare you say I'm unfair? 你竟敢説我不公平?

Not one of them dared mention this. 他們誰也不敢提這件事。

2.用作實義動詞You don't need to do it yourself. 你不必親自做這件事。 We need to tell them the news. 我們需要把這消息告訴他們。

The table needs painting (to be painted.). 桌子需要油漆一下。

We should dare to give our own opinion. 我們要敢於提出自己的觀點。

He did not dare (to) look up. 他不敢抬頭看。

I dare day he'll come again. 我想他會再來的`。(I dare say…為固定習語)

(二)情態動詞後跟完完成這項工作的。

He isn't here. He must have missed the train. 他還未到，一定是沒趕上火車。 Where can (could) he gone? 他能到那裏去了呢?

You may (might) have read about it. 你可能在報上已經讀到這件事了。 You could (might) have been more careful. 你本來可以更細心的。

He needn't have worried it. 他本不必為此事擔心。

There was a lot of fun at yesterday's party. You ought to have come, but why didn't you? 昨天的聚會非常有意思。你本應該來，為何不來呢?

　　八年級英語知識點總結

1. How often do you exercise? 你(你們)多久鍛鍊一次身體?

How often + 助動詞do(does或did) + 主語 + do sth.? 疑問詞how often是問頻率(多久一次),(在這裏助動 詞do(does或did) 是起幫助構成疑問的作用)與一般現在時或一般過去時連用，回答一般是用表示頻率的副詞

如：once, twice, three times„, sometimes, often, quite, often, never, every day, once a week , twice a month , three times a month , three or four times a month 等。

2、 Mom wants me to get up at 6:00 and play ping-pong with her . want to do sth. 意思是“想要做某事”; want sb. to do sth.意思是“想要某人做某事”。

3、 She says it‘s good for my health.

be good for...表示“對„„有益(有好處)”;其反義為：be bad for...。(這裏for 是介詞，後跟名詞、代詞或動名詞)

4、I try to eat a lot of vegetables , usually ten to eleven times a week .

try to do sth.表示“ 盡力做某事 ” ，不包含是否成功的意思而try doing sth.表示“(用某一辦法)試着去做某事”。

5、 That sounds interesting.

這是“主語+系動詞+表語”結構的簡單句。sound(聽起來)，look(看起來)，smell (聞起來)，taste(嚐起來)，feel(覺得)，seem(好象)，grow(變得),get (變得)等詞在英語中可用作系動詞，後跟形容詞作表語。

6、It’s easy to have a healthy lifestyle, and it’s important to eat a balanced diet.

7、 forget to do sth. 忘記要做某事 forget doing sth. 忘記做過某事

8、. doing sth. takes sb. Some time/ money

=It takes sb. some time/money to do sth.=sb. spends some time/money (on sth.)

=sb. spends some time/money (in) doing sth.=sth. costs sb. some time/money

=sb. pay some money for sth.花費某人多少時間/金錢做某事/某人花費多少金錢/時間做某事

9、it’s easy to do sth. 做某事容易 it’s hard (difficult) to do sth.做某事難， It’s necessary to do sth.做某事必要