初三上冊英語知識(shí)點(diǎn)歸納
有質(zhì)量的知識(shí)才是名校的真實(shí)力,每一所這樣的大學(xué),至少都有十種左右高質(zhì)知識(shí)儲(chǔ)備在教授門手中,儲(chǔ)備在這些學(xué)校與世界的多重聯(lián)系中,正是這高質(zhì)量知識(shí)的儲(chǔ)備。下面是小編為大家精心整理的初三上冊英語知識(shí)點(diǎn)歸納,希望對大家有所幫助!
初三上冊英語知識(shí)點(diǎn)歸納
to+動(dòng)詞原形
(1)作主語
動(dòng)詞不定式作主語時(shí),句子的謂語動(dòng)詞常用單數(shù),其位置有以下兩種: (1)把不定式置于句首。
如:To get there by bike will take us half an hour.
(2)用it作形式主語,把真正的主語不定式置于句后,常用于下列句式中。
如:
It+be+名詞+to do It's our duty to take good care of the old.
It takes sb+some time+to do How long did it take you to finish the work?
It+be+形容詞+for sb+to do It is difficult for us to finish writing the composition in a quarter of an hour.
It+be+形容詞+of sb+to do It is stupid of you to write down everything (that) the teacher says.
It seems(appears)+形容詞+to do It seemed impossible to save money.
在句型中,常用表示客觀情況的形容詞,如:difficult,easy,hard,important,impossible,necessary 等;
在句型中,常用careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise等 表示贊揚(yáng)或批評(píng)的詞。
在不定式前的sb,可看作其邏輯主語。這一句式有時(shí)相當(dāng)于Sb is+形容詞+to do句式 ,如:It's kind of you to help me with my English.=You are kind to helpme with my English.
(3)舉例
(1) It's easy (for me) to do that.我做這事太容易了
easy, difficult, hard, important, possible, impossible, comfortable, necessary, better;
the first, the next, the last, the best, too much, too little, not enough
1、It's so nice to hear your voice.
聽到你的聲音真高興。
2、It's necessary for you to lock the car when you do not use it.
當(dāng)你不用車的時(shí)候,鎖車是有必要的。
(2) It's very kind of him to help us. 他幫助我們,他真好。
Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考慮周到的), silly, selfish(自私的)
例句:
1、It was silly of us to believe him. 我們真愚蠢,竟然相信了他。
2、It seemed selfish of him not to give them anything. 他不給他們?nèi)魏螙|西,這顯得太自私了。
注意:
(1) 其他系動(dòng)詞如,look,appear等也可用于此句型
(2) 不定式作為句子成分時(shí),動(dòng)詞用單數(shù)形式。
(3) 當(dāng)不定式作主語的句子中又有一個(gè)不定式作表語時(shí),不能用It is… to…的句型
(對)To see is to believe. 眼見為實(shí)。
(錯(cuò))It is to believe to see.
初三上冊英語知識(shí)點(diǎn)梳理
動(dòng)詞不定式作賓語
后面能接不定式作賓語的動(dòng)詞有:agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。
1、We hope to get there before dark. 我們希望天黑以前到那兒。
2、The man decided to do it herself. 那個(gè)男人決定自己做那件事。
動(dòng)詞不定式作賓語的注意事項(xiàng)(2點(diǎn))
1. 有些動(dòng)詞既可跟不定式作賓語,也可跟動(dòng)名詞作賓語,但含義不同:
remember to do 記住要做某事
remember doing 記得曾經(jīng)做過某事
forget to do忘記要做某事
forget doing 忘記曾經(jīng)做過某事
stop to do 停下來去做某事
stop doing 停止做某事
go on to do 繼續(xù)做另一件事
go on doing 繼續(xù)做原來在做的事
2. 不定式作賓語時(shí),如帶有賓語補(bǔ)足語,則要把不定式放到后面,用it作形式賓語,構(gòu)成“主語+動(dòng)詞+it+賓補(bǔ)(形容詞、名詞)+不定式”結(jié)構(gòu)。
如:He found it very difficult to get to sleep.他發(fā)現(xiàn)很難入睡。
初三上冊英語知識(shí)點(diǎn)歸納
動(dòng)詞不定式作賓語補(bǔ)足語
1. 后面能接to不定式作賓語補(bǔ)足語的動(dòng)詞有:ask, order, teach, tell, want, wish, help等。
The teacher told us to do Exercise 1. 老師要我們做練習(xí)一。
I want both of you to go. 我要你們倆去。
We helped her (to) repair her bike. 我們幫助她修理自行車。
2. 使役動(dòng)詞let, have, make及感官動(dòng)詞see, watch, notice, hear, feel等要以不帶to的不定式作賓補(bǔ)。
Let’s have a rest. 我們休息一會(huì)吧。
I saw him come in. 我看見他進(jìn)來了。
感官動(dòng)詞后既可跟不帶to的不定式作賓補(bǔ),也可跟v-ing作賓補(bǔ),前者表示動(dòng)作的全部過程已結(jié)束;后者表示動(dòng)作正在進(jìn)行。
I saw him come downstairs.我看見他下了樓。(說明他下樓了這件事)
I saw him coming downstairs.我看見他在下樓。(說明他下樓時(shí)的情景)
初三上冊英語知識(shí)點(diǎn)提綱
動(dòng)詞不定式作定語
不定式作定語一般放在所修飾的詞的后面。
I need something to eat.
Do you have something to read?
Tom was so excited that he had no word to say.
He is really a fool only to eat.
The man to stand here just now is our English teacher.
The doctor had no way to save the patient.
注意:
(1)作定語的不定式是由及物動(dòng)詞組成,被修飾的名詞或代詞與不定式之間存在方位或方式關(guān)系需要有介詞。
I am looking for a room to live in. 我正在找一間住房。(方位關(guān)系)
We have many things to do experiments with.
我們有許多做實(shí)驗(yàn)的東西(方式關(guān)系)
(2)作定語的不定式是由“be + adj + prep”構(gòu)成的動(dòng)詞短語。
Here there isn’t any book for me to be interested in.
We have done many things to proud of. 我們做了許多引以自豪的事。
初三上冊英語知識(shí)點(diǎn)總結(jié)
動(dòng)詞不定式作主語
To give is better than to receive.
To reach there on foot is impossible.
動(dòng)詞不定式作主語時(shí),可以用it 代替,把實(shí)際主語不定式放在后面。
It’s better to give than to receive.
It’s impossible to reach there on foot.
It’s + adj + for sb. to do sth.
It’s not difficult for me to study English well.
It’s easy for him to work out this math problem.
在這個(gè)句型中,如果形容詞與不定式的邏輯主語關(guān)系密切,并且形容詞用來說明邏輯主語的性質(zhì)、品質(zhì)、特點(diǎn)等,由of引出邏輯主語。這類形容詞主要有nice, kind, good, wrong, right等。
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