Unit 6 Topic 2 Section D课件2022-2023学年仁爱科普版英语八年级 下册

Unit 6 Enjoy Cycling Topic 1 How about exploring Tian’anmen Square. Section D Pre-class activities 不要让失败压倒自己 时间状语从句 什么是状语？ 状语用中文对标，“地”，他的语义功能是描述一件事情发生的状态，比如在什么时间，在什么地方，因为什么原因，为了什么目的，通过什么方式等等。 引导词？ when while as before after… 短暂性动词：指不能延续的动作，这种动作发生后便立即结束。 如：open,close,begin,come,go,buy,borrow,lend,finish等（常用when，不用while） 延续性动词：表示能够延续的动作，这种动作可以延续下去或产生持久影响。 如：learn,work,read,walk,sing,wait,live等 （when和while可以替换使用） 1.I will visit my good friend when I_________ 当我到达时，我将去看望我的好友。(短暂性动词) Someone knocked at the door when I______ 当我正在睡觉时，有人敲门。(延续性动词) arrive. was sleeping. 2.while+进行时/持续状态。强调对比 Father was cleaning the car while I was playing computer games. 当我正在玩电脑游戏时，爸爸正在清洗汽车。 3.as 强调伴随 As I walking down the street, I came across an old friend of mine. 当我沿着大街行走时，碰巧遇到了我的一个老朋友。 4.before在...之前 You need to get out of here before my mother come back. 你需要在我妈妈回来之前离开这里。 5.after 在...之后 eg:I arrived after he left. 我在他离开之后到达。 6.as soon as I will call you as soon as I arrive in Shanghai. 我一到上海就给你打电话。 7.not...until...（直到...才）主句的谓语动词必须是短暂性动词。 He didn't go to bed until he finished his homework. 他直到做完作业才睡觉。(go to bed 表示的动作不能持续) 时间状语从句用法可以用八个字来概况： 主将从现或主过从过 主将从现：主句用了将来时，从句就要用现在时 主过从过：主句用了过去时，从句也要用过去时 时态 1.When he knows the result, he will be happy. 2.When I arrived, I found the door open. 3.When he came in , I was watching TV. 4.I won't leave until he finishes the work. 5.As soon as he arrived, he began to work. 6.While he was in London, he made a lot of friends. 从短选择when 从长while/when 主从都长用while 一边一边找as 口诀 Don’t forget to close the window _______ you leave. Helen went to fly kites _______ she finished her homework. Jack didn’t go to bed_________10:30 last night. He’ll send me a message _____________ he gets to London. _______I got to the station, it began to rain heavily. 用when, before, after, until, as soon