初中英语语法之连词-1.ppt

三者均可译为“在……时候”。when引导的从句，动词既可以是延续性的，也可以是终止性的。一般来说，当主句的动作正在进行时，when引导的从句的动作才发生；while引导的从句中，动词只能是延续性的，一般来说，当while引导的从句的动作正在进行时，主句的动作才发生；若主从句动作同时发生，且强调“一边一边”这样的意思，一般用 as。 When I came into the room, I found him lying there asleep. She sang as she walked. 她一边走一边唱歌。注意：while 可以表示对比关系“然而”。He is short while his brother is tall. Homework ： Go over the usage of conjunctions. 2. Finish the related exercises. 连 词 (Conjunction) 连 词 (Conjunction) 一、连词定义: 用来连接词、短语或句子的词。 e.g. I study English and Chinese. Does he work at school or in the hospital? I get up early, but my brother gets up late. 三、用法 1.并列连词 --- 连接具有并列关系的词，短语或句子。 常见的有： (1)表并列关系的and, both…and, not only…but also, neither…nor，as well as（也，和）等。 (2)表选择关系的or, either…or等。 (3)表转折关系的but, however等。 (4)表因果关系的for, so等。 考点一： 1）判断改错： They sat down and talk about something. They started to dance and sang. I saw two men sitting behind and ate there. 　 F F F eating sing talked and (“和，并且”) 与 or (“否则”) “and” 连接平行结构。 （1）肯定句中用“and” 表“和”； （2）否定句中用“or”表“和” 。 2）翻译：① 我喜欢英语和数学。 ② 我不喜欢英语和数学。 I like English _____ math. I don’t like English ____ math. and or = Study hard, _____ your math will be worse. 3）用 “and” 或“or” 填空： Study hard, _____ your math will be better. and or “and”意为“这样，那么”； “or” 意为 “否则” 。 1. Which do you like better, apples, __ pears? A. and B. but C. or 2. Now we have no time _____ money.  A. so B. and C. or or: 1. 用于疑问句, 表选择 2. 用于否定句, 表并列（肯定句用and） 3.Christine, Aileen _____ (和) I are good friends. Study hard, ______ (否则)you’ll fall behind. 4. Are you coming by bus ____(或者) on foot? and or or 1. It’s getting warmer __ warmer. A. and B. but C. or 2. He or the twins __ the USA. A. comes from B. come from C. is from 4. Not Tom but I ___ going to give the talk. A. am B. i