高一英语时间原因状语从句 教师学生版_图文

1、Presentation (2 时间状语从句及原因状语从句时间状语从句引导词:when, while, as, before, after, until, till, as soon as, the moment, every time, each time, hardlywhen, no sooner than时态:当主句是一般将来时时,时间状语从句常用一般现在时代替一般将来时(主将从现I will tell him everything when he comes.Tips:1. 比较when, while, aswhile:“与同时,在期间, 趁着”,从句动作是延续性的,侧重主句动作与从

2、句动作相对比。While he was reading, his wife was cooking.They rushed in while we were discussing.Strike the iron while it is hot. 趁热打铁。总结:1. while引导的从句常用进行时态。2. 通常主从句的主语不同。3. while还可以表示“虽然,尽管”,引导让步状语从句,多放在句首。While I admit his good points, I can see his bad.尽管我承认他有优点,我也知道他有缺点。when:除了“当时候”讲,还可译为“这时,那时”,相当于an

3、d at this/that time, 强调动作的突然性常用句式有:We were about to leave when it began to rain.be about to do whenI had not been reading for half an hour when I heard steps outside.had(notdonewhen(“刚刚(还没就”It was 8:00 in the evening when he went back from work.It be + 时间点+ when(当时是时间be on the point of doingwhen(“正要

4、时突然”as:“一边一边”,“随着”As she sang, tears ran down her cheeks.We get wiser as we get older. 我们随着年龄的增长而变得聪明起来。2. before “在之前”,“还没来得及就”The ring stopped before I could answer the phone. 我还没来得及接电话,电话铃就停了。常用句式:It was + 一段时间+ before + 从句“过了多久才 ”It was two years before we met again. 又过了两年我们才再次相见。It wasnt +一段时间+

5、 before + 从句“没过多久就 ”It wasnt two years before we met again.相隔没到两年我们就又见面了。It will be + 一段时间+ before + 从句“要过多久才”It will be long before we meet again. 要过很长时间我们才能再见面。It wont be + 一段时间+ before + 从句“不用过多久就会”It wont be long before we meet again.不用过很长时间我们就又能见面了。3. 比较until和till1until可用于句首,而till通常不用于句首Until y

6、ou told me, I had heard nothing of what happened.2until when 疑问句中,until要放在句首-Until when are you staying?你呆到什么时候?-Until next Monday.呆到下周一。4. since1 从句谓语是延续性动词,则译为“自从不做某事已经多长时间了”It is /has been two years since he smoked. 他已有两年不抽烟了。2 从句谓语是非延续性动词,则译为“自从做某事已经多长时间了”It is /has been two years since he died.

7、 他去世已有两年了。3It /This/That is + the + 序数词+ time + (that + sb.have doneIt /This/That was + the + 序数词+ time + (that + sb.had doneIt is the first time that I have read this story. 这是我第一次读这个故事。5. “一就”的表达法as soon as, immediately, directly, instantly, the moment, the minute, the second, the instant,no soone

8、rthan,hardly/scarcelywhen他一写完作业就去看电视了。He started to watch TV as soon as/ immediately/ directly/ instantly/ the moment/ the minute/ the second/the instant he finished his homework.hardly/scarcelywhen;no soonerthan一就1hardly/scarcely和no sooner所在的句子是主句(过去完成时,when和than引导的是从句(一般过去时。2when和than引导的从句不能放在主句之前

9、。I had no sooner opened the door than he rushed out.He had hardly/scarcely seen the policeman when he ran away.6. every time, each time, next time, any time, the first time, all the time等名词性短语可以用来引导时间状语从句,表示“每次,下次,任何时候,第一次”等。Next time you come, do remember to bring your son here.下次来这时,记得带上你儿子。He wil

10、l sing every time he is happy. 每次他高兴时就会唱起歌来。原因状语从句引导词:because, as, since, now that, seeing that, in thatTips:1. 比较because, since, as:because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或since。I didn't go, because I was afraid. 我不去是因为我怕。Since /As the weather is so bad, we have to delay our jo

11、urney. 天气那么糟,旅行推迟了。2. 比较because和for:1 从性质上说,because是从属连词,连接原因状语从句;而for是并列连词,连接两个并列分句。2 从意义上说,because从句表示的是客观的、直接的原因;而for分句表示的只是主观推断的依据。It's going to rain, because the dark clouds are gathering and hanging lower and lower.就要下雨了,因为乌云密布,而且越压越低了。It's going to rain, for my knee joints are aching.

12、 就要下雨了,因为我的膝关节酸痛。3 从句法上来说,because引导的从句可以放在主句之前,也可放在主句之后;但是for引导的分句只可放在另一分句之后。She was so depressed because she failed the exam. 她很沮丧,因为她考试没及格。Because she failed the exam, she was so depressed.She must be depressed, for she failed the exam. 她一定很沮丧,因为考试没及格。For she failed the exam, she must be depressed. (×4. because可以用于强调结构“It is/was becausethat”,可以引导表语从句,还可以在because前加上only, just,merely,simply等来加强语气,而其他连词均不可以。It is because I work so hard that I was promoted last month.我上个月得到提升是因为我努力工作。It is chiefly because he is too