高中英语语法-连词ppt课件.ppt
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1、在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么连词 在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v什么是连词?v用于连接单词,短语或句子的词语并列连词从属连词在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v表并弄关系的连词:v1.and 和,而且v基本用法:表并列 I like apples and oranges.v祈使句后用and,有条件句作用v此时and=if you you will Study hard,and
2、 you will pass the exam.Go straight,and you will see the library.并列连词并列连词在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v2.both and 既也,两者都(谓语用复数)Both you and Jim are from England.She can speak both French and English.v3.neither nor 既不也不,两者都不 连接两个并列主语时,谓语动词与最近的主语保持一致。Neither I nor he likes this
3、song.并列连词并列连词在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么并列连词v4Not only but also不但而且(就近原则)Not only the mother but also the children are ill.He not only washed the clothes but also cleaned the room v5.as well as 与一样,也1)用来连接并列的主语时,谓语动词要与前一主语保持一致 Helen as well as I is going to HK next week.2)如a
4、s well as 前是不定式,那其后面也应是不定式,但to省略 Her mother asks her to do the housework as well as(to)look after her sister.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v二,表示选择关系的连词v1.eitheror 要么要么 不是就是 (就近原则)Either you or I am going there tomorrow.She is either drunk or mad.Either you or she attends the me
5、eting.v2.or 还是,或者,否则 Is she a teacher or a student?Hurry up,or we will miss the bus.v3.otherwise 否则 (可与or 互换)Get up quickly,otherwise you will be late for school.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v三,表示转折关系的连词vbut 但是 he is old,but he is very healthy.vhowever 然而,但是,可放在句首,中,末,通常用逗号隔开,
6、作插入语。My room is small,however,its very comfortable.vwhile 然而,而 I am good at swimming while he is good at running.vyet,然而,可是 He studied hard,yet he fail the exam.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v四,表示因果关系的连词vso 因此,所以(不能与because连用)vtherefore 因此,所以(比so正式,常与and连用)vfor 因为 v与because的区别:
7、for的句子重心在for前的分句,而because重心在because引导的从句 Its morning,for the birds are singing.(对,表推断的原因)Its morning,because the birds are singing.(错,因为鸟叫不是天亮的直接原因)v但可以说the birds are singing because its morning.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么v用以引导名词性从句和状语从句的连词,由从属连词所导的句子叫从句。v引导时间状语从句的:when,whil
8、e,as,before,after,until,till等 vwhen用来引导长时间的从句时,从句中用短暂性动词;用来引导长时间的从句时,用持续性动词。当从句的主语与主句的主语相同时,be动词可省略 When I got home,my family were already having dinner.(when表示点时间)When they were still talking and laughing,the teacher came in.(when表示时间段)When(you are)in trouble,ask him for help.从属连词从属连词在日常生活中,随处都可以看到
9、浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么vwhile用来引导延续性动作或状态的从句,强调主从句的动作同时发生或持续。vwhile通常表示一段时间,从句中要用持续性动词作谓语。she fell asleep while she was reading the newspaper.vwhile有时可以作并列连词,表示对比,可译成然而。I am fond of English while he likes math.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一点点算不了什么vas 引导的从句中多用表示动作的动词,不用b
10、e动词,且多是短暂性或发展变化的情况,可理解为“随着”vas表示点时间时,从句中用短暂性动词;表示段时间时,用持续性动词。as和when两者经常可以通用。The thief was caught as/when he was stealing in the supermarket.vas表示 一边一边,强调从句和主句中两个动作交替进行或同步进行。They talked as they walked.vas表示随着 As time goes on,its getting warmer and warmer.在日常生活中,随处都可以看到浪费粮食的现象。也许你并未意识到自己在浪费,也许你认为浪费这一
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