高一英語時(shí)間原因狀語從句 教師學(xué)生版

1、Presentation (2) 時(shí)間狀語從句及原因狀語從句時(shí)間狀語從句引導(dǎo)詞：when, while, as, before, after, until, till, as soon as, the moment, every time, each time, hardlywhen, no sooner than時(shí)態(tài)：當(dāng)主句是一般將來時(shí)時(shí)，時(shí)間狀語從句常用一般現(xiàn)在時(shí)代替一般將來時(shí)（主將從現(xiàn)）I will tell him everything when he comes.Tips：1. 比較when, while, aswhile：“與同時(shí)，在期間, 趁著”，從句動(dòng)作是延續(xù)性的，側(cè)重主句動(dòng)作

2、與從句動(dòng)作相對(duì)比。While he was reading, his wife was cooking.They rushed in while we were discussing.Strike the iron while it is hot. 趁熱打鐵。總結(jié)：1. while引導(dǎo)的從句常用進(jìn)行時(shí)態(tài)。 2. 通常主從句的主語不同。 3. while還可以表示“雖然，盡管”，引導(dǎo)讓步狀語從句，多放在句首。While I admit his good points, I can see his bad.盡管我承認(rèn)他有優(yōu)點(diǎn)，我也知道他有缺點(diǎn)。when：除了“當(dāng)時(shí)候”講，還可譯為“這時(shí)，那時(shí)”，相

3、當(dāng)于and at this/that time, 強(qiáng)調(diào)動(dòng)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（not） donewhen（“剛剛（還沒）就”）It was 8:00 in the evening when he went back from work.It be + 時(shí)間點(diǎn) + when（ 當(dāng)時(shí)是時(shí)間）be on the point of d

4、oingwhen（ “正要時(shí)突然”）as：“一邊一邊”， “隨著”As she sang, tears ran down her cheeks. We get wiser as we get older. 我們隨著年齡的增長而變得聰明起來。2. before “在之前”，“還沒來得及就”The ring stopped before I could answer the phone. 我還沒來得及接電話，電話鈴就停了。常用句式： It was + 一段時(shí)間 + before + 從句 “過了多久才 ”It was two years before we met again. 又過了兩年我們才再

5、次相見。It wasnt + 一段時(shí)間 + before + 從句 “沒過多久就 ”It wasnt two years before we met again. 相隔沒到兩年我們就又見面了。It will be + 一段時(shí)間 + before + 從句 “要過多久才”It will be long before we meet again. 要過很長時(shí)間我們才能再見面。It wont be + 一段時(shí)間 + before + 從句 “不用過多久就會(huì)”It wont be long before we meet again. 不用過很長時(shí)間我們就又能見面了。3. 比較until和till 1）

6、until可用于句首，而till通常不用于句首 Until you told me, I had heard nothing of what happened.2）until when 疑問句中，until要放在句首-Until when are you staying?你呆到什么時(shí)候？-Until next Monday.呆到下周一。4. since 1) 從句謂語是延續(xù)性動(dòng)詞，則譯為“自從不做某事已經(jīng)多長時(shí)間了”It is /has been two years since he smoked. 他已有兩年不抽煙了。2) 從句謂語是非延續(xù)性動(dòng)詞，則譯為“自從做某事已經(jīng)多長時(shí)間了”It is

7、 /has been two years since he died. 他去世已有兩年了。3）It /This/That is + the + 序數(shù)詞 + time + (that) + sb. have done It /This/That was + the + 序數(shù)詞 + time + (that) + sb. had doneIt is the first time that I have read this story. 這是我第一次讀這個(gè)故事。5. “一就”的表達(dá)法as soon as, immediately, directly, instantly, the moment, t

8、he minute, the second, the instant, no soonerthan, hardly/scarcelywhen他一寫完作業(yè)就去看電視了。He started to watch TV as soon as/ immediately/ directly/ instantly/ the moment/ the minute/the second/the instant he finished his homework. hardlyscarcelywhen；no soonerthan 一就1）hardlyscarcely和no sooner所在的句子是主句（過去完成時(shí)）

9、，when和than引導(dǎo)的是從句（一般過去時(shí)）。 2）when和than引導(dǎo)的從句不能放在主句之前。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等名詞性短語可以用來引導(dǎo)時(shí)間狀語從句，表示“每次，下次，任何時(shí)候，第一次”等。Next time you come, do rem

10、ember to bring your son here. 下次來這時(shí)，記得帶上你兒子。He will sing every time he is happy. 每次他高興時(shí)就會(huì)唱起歌來。原因狀語從句引導(dǎo)詞：because, as, since, now that, seeing that, in thatTips：1. 比較because, since, as： because語勢(shì)最強(qiáng)，用來說明人所不知的原因，回答why提出的問題。當(dāng)原因是顯而易見的或已為人們所知，就用as或 since。I didn't go, because I was afraid. 我不去是因?yàn)槲遗?。Sinc

11、e /As the weather is so bad, we have to delay our journey. 天氣那么糟，旅行推遲了。2. 比較because和for：1) 從性質(zhì)上說，because是從屬連詞，連接原因狀語從句；而for是并列連詞，連接兩個(gè)并列分句。 2) 從意義上說，because從句表示的是客觀的、直接的原因；而for分句表示的只是主觀推斷的依據(jù)。 It's going to rain, because the dark clouds are gathering and hanging lower and lower. 就要下雨了，因?yàn)闉踉泼懿迹以綁涸?/p>

12、低了。 It's going to rain, for my knee joints are aching. 就要下雨了，因?yàn)槲业南リP(guān)節(jié)酸痛。 3) 從句法上來說，because引導(dǎo)的從句可以放在主句之前，也可放在主句之后；但是for引導(dǎo)的分句只可放在另一分句之后。 She was so depressed because she failed the exam. 她很沮喪，因?yàn)樗荚嚊]及格。 Because she failed the exam, she was so depressed. She must be depressed, for she failed the exam. 她一定很沮喪，因?yàn)榭荚嚊]及格。 For she failed the exam, she must be depressed. （×）4. because可以用于強(qiáng)調(diào)結(jié)構(gòu)“It is/was becausethat”，可以引導(dǎo)表語從句，還可以在because前加上only, just，merely，simply等來加強(qiáng)語氣，而其他連詞均不可以。It is because I work so hard that I was promoted last month. 我上個(gè)月得到提升是因?yàn)槲遗ぷ鳌?It is chiefly because he is