初一英語(yǔ)語(yǔ)法知識(shí)點(diǎn)
想學(xué)好初一英語(yǔ),其中語(yǔ)法的學(xué)習(xí)是一項(xiàng)重要的內(nèi)容。下面是學(xué)習(xí)啦小編為大家收集整理的初一英語(yǔ)語(yǔ)法的知識(shí)點(diǎn),相信這些文字對(duì)你會(huì)有所幫助的。
初一英語(yǔ)語(yǔ)法知識(shí)點(diǎn)(一)
助動(dòng)詞(do, does)的用法只有實(shí)意動(dòng)詞作謂語(yǔ)時(shí)才涉及使用助動(dòng)詞。以like為例:
(1)當(dāng)句子為肯定句時(shí)不涉及使用助動(dòng)詞,只涉及"主謂一致"原則。
eg : I like English a lot.
Michael likes Chinese food very much.
(2)當(dāng)句子為否定句時(shí),要根據(jù)主語(yǔ)的人稱(chēng)來(lái)決定使用相應(yīng)的助動(dòng)詞:當(dāng)主語(yǔ)為"三單"時(shí),要使用does;當(dāng)主語(yǔ)為"非三單"時(shí),用助動(dòng)詞原形do。例如把下列句子變否定句:
Kangkang likes math.----Kangkang doesn't like math.
They like sports.------They don't like sports.
(3)當(dāng)句子變疑問(wèn)句時(shí),同樣要根據(jù)句子的主語(yǔ)來(lái)決定在句首使用Do或Does.例如下列句子變問(wèn)句:
Michael likes Chinese Food.----Does Michael like Chinese food? Yes, he does./ No, he doesn't.
Jane and Helen like music.----Do Jand and Helen like music? Yes, they do./ No, they don't.
初一英語(yǔ)語(yǔ)法知識(shí)點(diǎn)(二)
可數(shù)名詞變復(fù)數(shù)時(shí),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(jié)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(jié)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(jié)尾的詞,變f (e)為"ves ",如:knife-knives, half-halves等;
(5)以o結(jié)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(fù)同形:sheep-sheep, Chinese-Chinese, Japanese-Japanese等;
(3)其他形式:mouse-mice, child-children等。
初一英語(yǔ)語(yǔ)法知識(shí)點(diǎn)(三)
1. 名詞變復(fù)數(shù)規(guī)則
(1)規(guī)則變化
1)一般在名詞詞尾加--s,如:car----cars; photo---photos; toy---toys; boy---boys
2)以s, x, ch, sh結(jié)尾的詞,在詞尾加---es,如:box---boxes; bus---buses
3)以輔音字母+y結(jié)尾,變y為i再加es,如:baby---babies; family---families
4)以fe結(jié)尾,變fe為v再加es,如:knife--- knives
(2)不規(guī)則變化:
如:foot---feet; man---men; woman---women; snowman---snowmen;
2. 集體名詞:people, clothes, police, family
3. 成雙出現(xiàn)的名詞:shoes, pants(trousers), gloves, eyes, ears
一詞多義:An orange is orange.
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