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1、 牛津译林版八年级上册英语 Unit 3-Unit 4 单元知识点总结Unit 31. You need to exercise and keep fit.你需要锻炼并保持健康。(1) need 在句中作实义动词,意为“需要;有必要”, 除直接接宾语外,还常后跟不定式的结构,固定结构 need sb. to do sth.意为“需要某人做某事“。如:Now, I need you to listen to me carefully.注:作实义动词时,疑问式为 do you need?,否 定式为 you dont need 。如:Do you need any help? No, we don
2、t.(2) 作情态动词时,后接动词原形,多用在疑问句、否定句中或条件句中。疑问式中为need you?, 否定式中为 neednt 。如:Need he go so soon? 他这么快就要走吗?He neednt . 他不必走。/Yes, he must. 是的,他必须走。If she wants anything, she need only ask. 她想要什么东西,只要开一下口就行了。(3) exercise 作名词时,如泛指“练习;锻炼”的抽象概念时不可数,如:morning exercises 早操 ;如若表示有完整一套动作的“锻炼;练习”则可数,且多用复数形式,如:do exer
3、cise 锻炼。(4)keep fit=keep healthy,意为“保持健康”,此处 keep 为系动词,表示保持或继续某种状态,后跟形容词 fit 构成系表结构。2.Come on 意为“来吧;快点儿”表示催促,如:Come on! The bus is leaving.此外,come on 还可表示“挑战;命令;恳求;激励别人”等。如:Come on Doreen, lets dance. 来吧,多琳,我们跳舞吧。3. Lets enjoy ourselves!让我们尽情享受吧!(1)Lets 的否定形式为 Lets not.(2)enjoy oneself 意为“玩得愉快”,相当于
4、have a good time。第 1页 共 16页 They all enjoyed themselves at the party.=They all had a good time at the party.have fun doing sth.=have a good time doing sth.=enjoy oneself doing sth.做某事很有乐趣4. Take care! 意为“保重”,常用于向别人道别。另外,take care 还可表示“小心;当心;注意”,相当于 look out/be careful,后常接不定式或从句,如:Take care not to hu
5、rt yourself!Take care that you cannot make the same mistake.take care of=look after 意为“照顾;照料”,后接名词或代词。如:Take care of her/my sister.5. How wide is the bridge? 桥有多宽? Its 90 feet wide.90 英尺宽。(1) wide 形容词,意为“宽的”,固定结构“基数词+ 单位+wide”表示“有宽”。对某物体的宽度提问要用固定结构“How wide?”,类似结构有“How tall/high/heavy/old/long/deep”
6、。-How long is the river? -It is 120 kilometres long.(2)wide 作副词时,意为“尽可能地;充分地”,如;The door was wide open.门四敞打开。区分:widely 副词,意为“普遍地;广泛地;范围广地”(by a lot of people; in or to manyplaces)The idea is now widely accepted.这个思想已获普遍接受。He has travelled widely in Asia.他在亚洲许多国家旅游过。6. The bridge is made of steel. 这座
7、桥是由钢制成的。be made of +材料, 由制造 可以直接看出原材料be made from+材料, 由制造, 不可以直接看出原材料be made in+产地be made by 后加人,强调动作的执行者be made up of +组成部分, 指由组成7. Around the world in a day!一日环游世界!“in + 一段时间”表示“在一段时间之后/之内”,通常用于一般将来时,提问用 how soon。 How soon will the movie start? In five minute.补充:与表示时间的名词连用时,介词 for 表示“持续时间”;介词 by 表
8、示“不迟于”;介词第 2页 共 16页牛津译林版八年级上册英语 Unit 3-Unit 4 单元知识点总结Unit 31. You need to exercise and keep fit.你需要锻炼并保持健康。(1) need 在句中作实义动词,意为“需要;有必要”, 除直接接宾语外,还常后跟不定式的结构,固定结构 need sb. to do sth.意为“需要某人做某事“。如:Now, I need you to listen to me carefully.注:作实义动词时,疑问式为 do you need?,否 定式为 you dont need 。如:Do you need an
9、y help? No, we dont.(2) 作情态动词时,后接动词原形,多用在疑问句、否定句中或条件句中。疑问式中为need you?, 否定式中为 neednt 。如:Need he go so soon? 他这么快就要走吗?He neednt . 他不必走。/Yes, he must. 是的,他必须走。If she wants anything, she need only ask. 她想要什么东西,只要开一下口就行了。(3) exercise 作名词时,如泛指“练习;锻炼”的抽象概念时不可数,如:morning exercises 早操 ;如若表示有完整一套动作的“锻炼;练习”则可数
10、,且多用复数形式,如:do exercise 锻炼。(4)keep fit=keep healthy,意为“保持健康”,此处 keep 为系动词,表示保持或继续某种状态,后跟形容词 fit 构成系表结构。2.Come on 意为“来吧;快点儿”表示催促,如:Come on! The bus is leaving.此外,come on 还可表示“挑战;命令;恳求;激励别人”等。如:Come on Doreen, lets dance. 来吧,多琳,我们跳舞吧。3. Lets enjoy ourselves!让我们尽情享受吧!(1)Lets 的否定形式为 Lets not.(2)enjoy one
11、self 意为“玩得愉快”,相当于 have a good time。第 1页 共 16页 They all enjoyed themselves at the party.=They all had a good time at the party.have fun doing sth.=have a good time doing sth.=enjoy oneself doing sth.做某事很有乐趣4. Take care! 意为“保重”,常用于向别人道别。另外,take care 还可表示“小心;当心;注意”,相当于 look out/be careful,后常接不定式或从句,如:T
12、ake care not to hurt yourself!Take care that you cannot make the same mistake.take care of=look after 意为“照顾;照料”,后接名词或代词。如:Take care of her/my sister.5. How wide is the bridge? 桥有多宽? Its 90 feet wide.90 英尺宽。(1) wide 形容词,意为“宽的”,固定结构“基数词+ 单位+wide”表示“有宽”。对某物体的宽度提问要用固定结构“How wide?”,类似结构有“How tall/high/he
13、avy/old/long/deep”。-How long is the river? -It is 120 kilometres long.(2)wide 作副词时,意为“尽可能地;充分地”,如;The door was wide open.门四敞打开。区分:widely 副词,意为“普遍地;广泛地;范围广地”(by a lot of people; in or to manyplaces)The idea is now widely accepted.这个思想已获普遍接受。He has travelled widely in Asia.他在亚洲许多国家旅游过。6. The bridge is
14、 made of steel. 这座桥是由钢制成的。be made of +材料, 由制造 可以直接看出原材料be made from+材料, 由制造, 不可以直接看出原材料be made in+产地be made by 后加人,强调动作的执行者be made up of +组成部分, 指由组成7. Around the world in a day!一日环游世界!“in + 一段时间”表示“在一段时间之后/之内”,通常用于一般将来时,提问用 how soon。 How soon will the movie start? In five minute.补充:与表示时间的名词连用时,介词 for 表示“持续时间”;介词 by 表示“不迟于”;介词第 2页 共 16页