当前位置:
文档之家› 初中英语时间状语从句ppt课件
初中英语时间状语从句ppt课件
#
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:study, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay 等。
#
终止性动词
也称非延续性动词、瞬间动词或点动词, 表示不能延续的动作,这种动作发生后立即 结束。 如:open, die, close, begin, finish, come, go, move, borrow, lend, buy,arrive, reach,fall,give,join,marry等。
#
when
• 由“when” 引导的从句:表示主句的动作和 从句的动作同时发生,或从句的动作发生在主 句动作之前。其谓语动词可以是延续性的,也可 以是非延续性的,
例:1. I was going out when a visitor came. (我正要出门,有客人来访。)(动词同时发生。)
2. I shall tell her the good news when she comes.
4.原因状语从句 5.结果状语从句 6.目的状语从句
7.让步状语从句 8.方式状语从句 9.比较状语从句
#
时间状语从句
定义:在句子中起时间状语作用的句 子称为时间状语从句,可放在句首或
者句尾。
时间状语从句
引导时间状语从句的普通类从属连词有 when(当……时), while(在……期间), as(当……,一边……一边……), before(在……之前), after(在……之后), since(从……以来), till/until(直到), not...until (直到...才) whenever(无论何时), as soon as(一……就)等。
You can’t do your homework while you’re watching TV.
#
as
• 由as引导的时间状语从句,[表示时间]当..., 的时候 , 一边... 一边, 随着。
• 如: • 1. She sang as she worked. • 她一边工作一边唱歌。 • 2. I saw him as he was getting off the bus. • 正当他下公共汽车时, 我看见了他。 • 3. As a child, he lived in America. • 他小时候住在美国。 • 4. You will grow wiser as you grow older. • 随着你年令的增长, 你会变得更聪明。
#
• (二)、while只能表示某一段时间,不能 表示某一点时间.在while引导的时间状语 从句中,其谓语动词只能是延续性的,而且 也只能与主句中的谓语动词同时发生或 存在.
• 例如:1、While Jim was mending his bike,Lin Tao came to see him.正当吉姆 修自行车时,林涛来看他.
3.When he was a child ,he was always trying out new ideas.
#
while
while 引导的从句:表示“当……过程中”,强 调某一段时间内主句和从句中谓语动词所表示的 动作在同一时期发生。由于while从句表示一个 持续的行为,所以从句中要用持续性动词,并且 持续性动词常用进行时态。 • 例: • Keep an eye on my little sister while I am away. • (我不在时,请照看一下我的小妹妹。) • While we were watching TV, Jim came in. • Strike while the iron is hot. 趁热打铁。
#
While my wife was reading the newspaper, I was watching TV.
While Jim was mending his bike, Lin Tao came to see him.
While they were talking, the bell rang.
#
• As the time went on,the weather got worse. • The atmosphere gets thinner and thinner as
the height increases. • 3. As years go by, • China is getting stronger and richer.
#
• 猜一猜:As a boy,he likes to playing basketball.
• I like playing basketball,while he likes playing the)、when,while都有“当……时候”的意思. when既可表示某一点时间,也可以表示某一段时间 .在 when引导的时间状语从句中,其谓语动词可以是延续性的, 也可以是非延续性的,可与主句中的谓语动词同时发生,也 可在其后发生. 例如:1、I was just reading a book when she came into my room.她走进我房间时,我正在看书. 2、Were you writing when the teacher came in?老师进 来的时候,你在写信吗? 3、When he was a child he was always trying out new ideas.他小时候就常常试验一些新的设想.
状语从句(adverbial clause)
一、定义
状语从句即从属连词引导的从句在句子中作 状语,修饰谓语动词,用来表示时间、地点、 条件、原因、结果、目的、让步、方式、比 较等。状语从句可以置于句尾或句首,置于 句首时常用逗号与主句隔开。
二、类型
1.时间状语从句 2.地点状语从句 3.条件状语从句