九年級英語知識點歸納
學習是快樂的,學習是幸福的,雖然在學習的道路上我們會遇到許多困難,但是只要努力解決這些困難后,下面是小編為大家精心整理的九年級英語知識點歸納,希望對大家有所幫助。
need和dare的用法
need和dare既可用作情態(tài)動詞,也可用作實義動詞。用作情態(tài)動詞時,主要用于否定句和疑問句。用作實義動詞時,可用于各種句式。
1.用作情態(tài)動詞--Need I come? --Yes, you must. --我需要來嗎? --需要。 You needn't telephone him now. 你現(xiàn)在不必打電話給他。
I don't think you need worry. 我想你不必發(fā)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? 你竟敢說我不公平?
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. 我們要敢于提出自己的觀點。
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)
情態(tài)動詞后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? 他能到那里去了呢?
You may (might) have read about it. 你可能在報上已經(jīng)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?lián)摹?/p>
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?
可數(shù)名詞變復數(shù)
可數(shù)名詞變復數(shù)時,有規(guī)則變化和不規(guī)則變化兩種。
1、規(guī)則變化:
1)一般情況直接在詞尾加“-s ”,如:cake-cakes, bag-bags, day-days, face-faces, orange-oranges等;
2)以s, x, sh, ch結尾的詞,要在詞尾加“-es ”,如:bus-buses, watch-watches, box-boxes等;
3)以輔音字母加y結尾的詞,變y為i再加“-es ”,如:baby-babies, country-countries, family-families等;
4)部分以f (e)結尾的詞,變f (e)為“ves ”,如:knife-knives, half-halves等;
5)以o結尾的詞,加“-s ”或“-es ”,如:zoo-zoos, photo-photos, tomato-tomatoes, potato-potatoes等。記憶口訣:除了“英雄”hero外,凡是能吃的,加“-es ”,不能吃的加“-s ”。
2、不規(guī)則變化:
1)改變單數(shù)名詞中的元音字母:man-men, woman-women, foot-feet, tooth-teeth等;
2)單、復同形:sheep-sheep, Chinese-Chinese, Japanese-Japanese等;
3)其他形式:mouse-mice, child-children等。