新概念第一冊(cè)主要語(yǔ)法知識(shí)-展示頁(yè)
2025-06-29 06:54本頁(yè)面
【正文】 was very beautiful ten yearsago.★變疑問(wèn)句將be動(dòng)詞移動(dòng)到句首例：Were you at the butcher’s?You were a student a year ago.將動(dòng)詞變?yōu)檫^(guò)去式，am, is的過(guò)去式為was，are的過(guò)去式為were例：I was at the butcher’s.一般過(guò)去時(shí)表示過(guò)去發(fā)生的動(dòng)作或事件，常和表示過(guò)去的時(shí)間狀語(yǔ)連用，如yesterday, last night, the day before yesterday, 3 days ago, Are the boys swimming across the river?★變否定句在be動(dòng)詞后面加 Is the dog running after a cat? Is he reading a book?The boys are swimming across the river.★變疑問(wèn)句將be動(dòng)詞移到句首例：Are we having lunch?The dog is running after a cat. He is reading a book.構(gòu)成：主語(yǔ)＋be動(dòng)詞＋動(dòng)詞的現(xiàn)在分詞＋其它成分例：We are having lunch. Yes, they do. No, they don’t.2. Yes, we do. No, we don’t The students don’t like smart teachers.★肯定回答及否定回答例：Yes, I do. No, I don’t. We don’t have any meat. Do the students like smart teachers?★變否定句在主語(yǔ)和動(dòng)詞之間加don’t.例：You don’t want to have a bath. Do we have any meat?The students like smart teachers.★變疑問(wèn)句在句首加do例：Do you want to have a bath?We have some meat.其他人稱及復(fù)數(shù)名詞例：I want to have a bath. Does the dog like bones?★變否定句在主語(yǔ)及動(dòng)詞之間加doesn’t, Does she like him? The dog likes bones.★變疑問(wèn)句在句首加does,動(dòng)詞變?yōu)樵屠篋oes he like books? She likes him. 不含有動(dòng)詞的句子，即含有一般動(dòng)詞的句子第三人稱單數(shù)及單數(shù)名詞例：He likes books. Tim and Jack are students.★變疑問(wèn)句將be動(dòng)詞移到句首 The girl is very beautiful. 含有be動(dòng)詞的句子例：He is a teacher.新概念一主要語(yǔ)法知識(shí)點(diǎn)（一）時(shí)態(tài)主要涉及的時(shí)態(tài)有：一般現(xiàn)在時(shí)，現(xiàn)在進(jìn)行時(shí)，一般過(guò)去時(shí)，現(xiàn)在完成時(shí)，一般將來(lái)時(shí)，過(guò)去進(jìn)行時(shí)，過(guò)去完成時(shí)，過(guò)去將來(lái)時(shí)1. 一般現(xiàn)在時(shí)表示一般性，經(jīng)常性的動(dòng)作或一般性事實(shí)。 例：Is he a teacher? Is the girl very beautiful? Are Tim and Jack students?★變否定句在be動(dòng)詞后面加not例：He is not a teacher. The girl is not very beautiful. Tim and Jack are not students.★肯定回答及否定回答例：Yes, he is. No, he is not. Yes, she is. No, she is not. Yes, they are. No, they are not. 動(dòng)詞變?yōu)樵屠篐e doesn’t like books. She doesn’t like him. The dog doesn’t like bones.★肯定回答及否定回答：例：Yes, he does. No, he doesn’t. Yes, she does. No, she doesn’t Yes, it does. No, it doesn’t.注意：第三人稱單數(shù)形式一般在動(dòng)詞后面加S，不要和名詞復(fù)數(shù)混淆，變否定句或疑問(wèn)句時(shí)名詞復(fù)數(shù)沒(méi)有任何變化。 現(xiàn)在進(jìn)行時(shí)表示現(xiàn)在正在進(jìn)行的動(dòng)作。 not例：We are not having lunch. He is not reading a book. The dog is not running after a cat. The boys are swimming across the river.★特殊疑問(wèn)句：what,which, how, where, who, etc.疑問(wèn)詞＋動(dòng)詞＋主語(yǔ)＋現(xiàn)在分詞例：What are you doing? What is she doing? What is the dog doing?注：(必背！！)沒(méi)有進(jìn)行時(shí)的動(dòng)詞：表示狀態(tài)，思想，感情和感覺(jué)的動(dòng)詞不能表示正在進(jìn)行的動(dòng)作①表示感覺(jué)，感官的詞see, hear, like, love, want,② have, has當(dāng)”擁有”講時(shí)沒(méi)有進(jìn)行時(shí)3. 含有be動(dòng)詞的句子， 不含有be動(dòng)詞的句子，將動(dòng)詞變?yōu)檫^(guò)去式例：I finished my homework yesterday. The boy went to a restaurant. The Sawyers lived at King Street a year ago.★變疑問(wèn)句在句首加did， 現(xiàn)在完成時(shí)構(gòu)成：主語(yǔ)+助動(dòng)詞have, has+過(guò)去分詞用法：1)表示過(guò)去發(fā)生的和現(xiàn)在有某種聯(lián)系的動(dòng)作，常和just, usually, already, since等時(shí)間副詞連用例：I have
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