第一篇第一篇 词法词法 五、 连词 复习要点 1.知识概要 2.连词一览表 3.常用并列连词的用法 1） and 2） bothand 3） not onlybut also 4） as well as 5） nor6） but 7） however, still, yet 8） while 9） or 10） either or/neither nor 11） so 12） then 13） for 4.常用从属连词的用法 1）that 2） when, while, as 3） after/before 4）since 5） till/until 6）as soon as 7） because/since/as 8） so/such that 9）if 10） unless=if not 11）though/although 12）asas/ than 14） as 13） whether/if 14） so/such that 3.常用近义连词的用法辨析 （1） while, when, as （2）as, because, since , for （3）if, whether （4）sothat, such.that （5）eitheror, neithernor, not onlybut also （6）although, but （7）because, so 4.正误辨析 5.例题解析 6.课时训练知识概要用来连接词、短语、从句或句子的词叫连词。连词是一种虚词，在句中不 能单独使用。连词可分为两类：并列连词和从属连词。 连词一览表作 用主 要 连连 词词 并 列 连连 词词表并列关系and, bothand, not onlybut also, neithernor等 表选择选择 关系or, eitheror等 表转转折关系but, however, while (而)，only (只不过过)等 表因果关系for, so，therefore (因此)，then（那么）等从 属 连连 词词引导时间导时间 状 语语从句after, before, when, while, as, until, till, since, as soon as等。 引导导条件状 语语从句if, unless等引导导原因状 语语从句because, as, since等引导导目的状 语语从句so that, in order that等引导让导让 步状 语语从句though, although, even if等引导结导结 果状 语语从句so that, sothat, suchthat等引导导比较较状 语语从句than, asas等引导导名词词从 句that, if , whether等难点链接1.常用并列连词的用法 1）and连接语法作用相同的部分.如： Let me know what you saw and heard in Europe. 如果连接的两个名词是指同一个人而有两种身份时,第二个名词前不要加冠词或所有格. 如：Her husband is a singer and songwriter. 祈使句+and代替条件句. 如：Work hard and you will pass the examination. 由and连接两个主语时谓语动词要用复数形式。如：You and I are from China. 但是， and前面的主语之前有every, each, no, many a的时候用单数谓语动词.如： Every train and bus was crowded with many people. 2） both+主语+and+主语+“复数谓语动词”。如： Both Tom and Jerry are going to the cinema. 3） not onlybut also如果连接两个主语,谓语动词临近原则.如： Not only he but also his parents are very kind to me. 4） as well as后面的主语不作为成分.如： This study, as well as many other reports, shows that cancer can be cured. 后面如果接动词一定要用动名词.如： She sings as well as playing the piano.5) nor是否定连接词, 后面接的句子应倒装. 如：I dont know, nor do I care. 6）but用来表示转折,如： He tried hard but he was unsuccessful. 还可以用在no one, none, nobody, nothing, all, every等词之后表示”除了以外”。如： All the boys but one are here.难点链接7）however, still, yet,含意相同相当于”butanyway”.如：The car was old, yet it was in excellent condition. She has her weaknesses, yet(but) that doesnt mean she is not good for the job. He lied to me, I still believe him. 8) while表示的是”相反的”,也可以用but, however, on the other hand来代替. While some people have nothing to eat, others eat too much. 9) or连接句子或词组,表示 “或者”之意。 Which do you prefer, yellow, blue or red? Was he angry, or was he pretending? or, 也有“否则”的意思. 如：Be quick, or you will be late. 10) either or/neither nor和not onlybut also并列主语时，谓语动词同样用就近 原则. Either Mary or her parents are going by bus. There is neither electricity nor free suppers in the hotel. Not only you but also I am from china. 11）so表示因此, 相当于therefore.（adv.） 如：They cost a lot of money, so use them carefully. It is very cold. Therefore, we should stay here. 12） then （adv）然后，而后，其次 如：I dropped in at her house and then I went home. 13）for引导的句子不可以放在句首，之前必须由逗号，表示推论的理由 They must be good friends, for they are always together. The day breaks, for the birds are singing.难点链接 2.常用从属连词的用法 1）that引导名词性从句(主语/宾语/表语从句),同位语从句，定语从句,如： That smoking can cause cancer is known to all. I was surprised to hear that he became the president. 2） when, while, as when 在-时刻或时期，可指时间点或时间段，从句动词是终止或持续动词。 When I got home, he was having supper. When I was young, I liked dancing. as 表示“边-边-”或“与-同时”表示动作同时发生伴随进行。动词相似,如终 止性动词为从句，则主句也为终止性动词。 They talked as they walked. while表示只是时间段，不是时间点，从句的动词只限于持续动词。 While I slept, a thief broke in. when 可以表示主句和从句先后发生. When he has finished his work, he takes a short rest. when 从句为终止动词不能用while 替换When。 he came yesterday, we were playing basketball. 如从句动词为终止性动词，主句也是终止性动词 when 和as 可以互换。 He came just as I reached the door. 难点链接 3） after/before After her husband died she had to take everything on herself. Take the medicine before you go to bed. 4） since引导的从句是肯定句,一般主句都是完成时. She has had another baby since we met. 5） till/until 其中until较为常用, till是口语. Until you told me, I had heard nothing of what happened. I wont go until he comes. 6）as soon as Ill tell him the news as soon as I see him. 7） because/since/as表示直接原因的时候不能用since或as.其他情况可以用 since既然，as 由于（语气弱）。 It was because he was ill that he didnt go to school. 8） so/such that 结果状语从句(程度) She was so moved that tears came to her eyes. They took such care of her that not long after she was restored to health.难点链接 9） if(假如,如果)不能用whether. If you call him a fatty, he will get angry. 10） unless=if not You can not interview him unless you get the permission. 11）though/although都作为”虽然,尽管”可以互换,although用的更多一些. 后面 不可以有but但可以有yet/still. Although he is much better, yet his father isnt satisfied. 12）asas/ than（用于比较状语从句中） 14） as可以引导状语从句 As I remember, he used to work here ten years ago. As I see it, there is still much room for improve