2023届高考英语二轮复习时间状语从句课件

这是一份2023届高考英语二轮复习时间状语从句课件，共40页。PPT课件主要包含了When 用法，Thank You等内容，欢迎下载使用。

状语从句在复合句中作状语,来说明一件事情发生的时间,地点,原因,条件,结果等.
八种状语从句: 1.时间状语从句: 2.地点状语从句: 3.原因状语从句: 4.条件状语从句: 5.（比较）方式状语从句: 6.目的状语从句: 7.结果状语从句: 8.让步状语从句:
引导时间状语从句的从属连词
1.基本类：befre、after、when、while、as、since、till、until、nce, as sn as
2. 名词类（由名词词组充当引导词）：the mment ,the minute, the secnd, the instant (一…就…);every time, each time, the last time, the first time
3. 副词类（由副词充当引导词）：immediately, directly, instantly (一...就...)
4.句型类：n sner…than…, hardly/scarcely… when…, etc. (一…就…)
I will give yu an answer immediately I finish my wrk.
Scarcely had he gne when she appeared.
注意:用于句首时应引起部分倒装, 且前部分一般用过去完成时
1 When he _______ (cme) back, please tell him t meet me at my ffice.
2 I will tell him when she _______back. 3 I wuld tell him when she ______back.
4 ---When ____ yu cme t see me, Dad?---I will g t see yu when yu ____ the training cursing. A.d; will have finished B.will; will finish C.d; are finishing D. will; finish
时间状语从句中用 一般现在时 代替 一般将来时,用 一般过去时 代替 过去将来时
1、when 时间状语从句 段/点时 延续，瞬间性动词 When the film ended, the peple went back. When I lived there, I used t g t the seashre.2、并列连词，正当…时候；忽然（即 at that mment）时，when只能跟在前一分句之后 Sb. was ding smething正在做… 这时… was abut t d sth 正要做…这时… + when…常一般过去时 was n the pint f ding sth.正要做某事的时候 had just dne sth 刚做完某事时突然... I was walking alng the street , when I met himI was abut t fall asleep when my sister came in.3、 表原因“既然”，相当于since; cnsidering that Why d yu walk when yu have a car?
while的用法小结
1. while 时间状语从句 必须是持续性的动词 在…期间，往往指一段时间 While we were talking, he came in. 2. while 并列连词，“而，却” 侧重主句和从句动作相对比 I am fnd f English while he likes maths.3. While 让步状语从句 虽然，尽管 句首 While they lve the children, they are strict with them.注意:虽然during 与 while 意思很相近， 但是during是介词，不能引导从句。
※while 含义：While I was walking dwn the street, I came acrss an ld friend. ( while =_______)He likes pp music, while I am fnd f flk music. ( while =_______)While I really dn’t like art, I find his wrk impressive. (while=___________)
①as 点时，从句中用瞬间性动词； 段时，用持续性动词。 as和when可通用The thief was caught as /when he was stealing in the supermarket.I saw Jim as / when he left the meeting rm.②as 一边…一边…，强调从句和主句中两个动作交替进行或同步进行They talked as they walked. He lked behind frm time t time as he went.③as 随着As time ges n, it's getting warmer and warmer.
when, while, as的用法区别
①只有当从句表示的是段时间，即其谓语动词有持续性特征时，这三者可以通用互换。I gt the news n the radi when / while / as I was having breakfast.②as 更强调同一时间 或紧接的一前一后 或伴随着的变化 We listened t the singer sing as he played the guitar. I thught f it just as yu pened yur muth. 你一张嘴我就知道你要说什幺 As he grew lder, he became less and less active.
③ when更强调特定时间， 还可表从句中的动作先于或后于主句的动作When I had given Mary the spare ticket, I fund my wn already gne. 当我把多余的票给了玛丽时，我才发现我自己的票已不知去向。（从句动作发生在主句之前，注意主从句的时态）When I finally gt there, he meeting had been n fr ten minutes. 当我最终赶到那里时，会议已开始十分钟了。（从句动作发生在主句之后，注意时态）
Cnclusin:when / while / as引导时间状语从句时的中文意义：
1.当…的时候(从句的谓语必须是延续性动词 ）
2.而,然而(强调两者对比）
1.一边….一边….2.随着….
He fell asleep _____________ he was reading.I kept silent ______ he was writing.She sang ____ she went alng.
when/while/as
主句表示的是一个短暂性动作，从句表示的是一个持续性动作
主、从句表示两个同时进行的持续性动作，且强调主句表示的动作延续到从句所指的整个时间
同时进行, “一边…一边”
It was raining hard ________ we arrived.Things are getting better and better _____ time ges n.It’s cld _____ it snws.I will g hme _____ he cmes back.
主句--持续性动作, 从句---短暂性动作
正在发展变化的情况, “随着”
“每当…的时候”(暗示一种规律性)
We were abut t start ______ it began t rain.He likes cffee, _____ she likes tea.__________ a by, he lived in Japan.__________ reading, he fell asleep.____________ in truble, ask her fr help.
as / when +名词，构成省略句,while无此用法
when/while+现在分词/介词短语/形容词等构成省略句
till, until
1．until / till 肯定句，直到…为止 主句必须为延续性动词 We shall wait until/till he cmes back.2． nt…until/till 直到…才，主句用瞬间性动词 I didn't leave until / till befre she came back.3．当nt until位于句首，主句要倒装 Nt until she stpped crying did I leave. 4. 强调句型中一般只用until It was nt until she tk ff her dark glasses that I recgnized her.
as sn as 一…就…， 用来表示主从句的动作是紧接着发生的。He will cme and see yu as sn as he can.He rushed hme as sn as he gt the gd news.
“一…就…” 除as sn as外，还有三类名词型——the mment, the minute, the secnd, the instant；副词型——immediately, directly, instantly；句式型——n sner…than…, hardly/scarcely…when… The mment I saw him I knew that there was n hpe. I came immediately yu called. I had n sner gt hme than it began t rain.
如hardly, scarcely 或n sner置于句首，句子必须用倒装结构。主句--- had dne，从句---- did。Hardly/Scarcely had I gt hme when it began t rain. N sner had I gt hme than it began t rain.
after after表示在一段时间之后。 Let's play ftball after schl.The sun came ut sn after the strm stpped.
befre befre表示在一段时间之前。 I must finish all the wrk befre g hme. Yu must first learn t walk befre yu try t run. befre 从句往往带有否定的含义。He ran ff befre I culd stp him. 我还没来得及阻止他，他就跑掉了。Take it dwn befre yu frget it. 趁着还没忘记的时候就记录下来。
一、含义1． We had sailed fur days and fur nights befre we saw land.2． We hadn’t run a mile befre he felt tired.3．Befre I culd get in a wrd, he had measured me.
1）It will be / was＋段时＋befre… 还要过多久才… It will be tw years befre he leaves the cuntry.2）It will be / was nt＋段时＋befre… 不多久就… It wasn’t tw years befre he left the cuntry.主句中表语多是 lng，nt lng，3 days, 2 weeks等表时间段的词或短语。译为“…之后…”
Since 自…以来
Since 自…以来 表动作从过去某一点时间一直延续到说话时间为止 since从句 -- did -- 瞬间性动词，主句-- have dne 按字面意思理解Since he graduated frm the cllege, he has wrked in this city.since从句--延续性动词、状态动词的过去式， 则表动作或状态的完成、结束按与字面相反的意思理解 Since he lived in Nanjing, I have nt heard frm him. Since he was a student, he has never cme back.
② It is / has been + 时间段 + since….（主句中谓语用一般式和用完成式区别不大， 后者更具强调意味）It is 2 years since he gave up smking. （终止v） 按字面意思理解 他戒烟已经有两年了It has been 10 years since they lived in that huse. （延续v） 相反的意思 他们从那所房子搬走已经10年了
考点: 易混淆句型 It is / has been + 段时+ since…. 自从…以来已有多长时间了 It will be / was nt＋段时＋befre… …之后… It is / was+点时 +when…当…的时候,是…时间 时间状从 It is / was …that… 强调句 Hw lng is it since we met last time?It was nt lng befre she gt married and mved t Japan.It was already midnight when I gt hme.It was a new pen that Mther gave me.
考点: 易混淆句型 It is / has been + 段时+ since…. 自从…以来已有多长时间了 It will be / was nt＋段时＋befre… …之后… It is / was + 点时 +when… 当…的时候,是… It is / was …that…It is five years ______he finished his research.It was five years ______he finished his research.It was five years later ____ he finished his research. It was 5 ’clck _____ he gt hme.It was at 5 ’clck _____ he gt hme.
Befre / when / since / that
It was 8 pm. ______ they gt t the village.It was 8 hurs ______ they gt t the village.It’s a lng time ______ I met yu last.It was at 8 pm. ______ they gt t the village.
1. It wasn’t until nearly a mnth later ___ I received the manager’s reply. A. since B. when C. as D. that
It was nearly a mnth ______ I received the manager’s reply.
It was nearly 9 ’clck _____ I received the manager’s reply.
It was nearly at 9 ’clck ______ I received the manager’s reply.
He fell asleep _____________ he was reading.I kept silent ______ he was writing.She sang ____ she went alng.It was raining hard ________ we arrived.I thught f it just __________yu pened yur muth.Things are getting better and better _____ time ges n.It’s cld _____ it snws.I will g hme _____ he cmes back.We were abut t start ______ it began t rain.He likes cffee, _____ she likes tea.__________ a by, he lived in Japan.__________ reading, he fell asleep.____________ in truble, ask her fr help.
主从句--几乎同时发生的短暂性动作
“而”、“却”(表示对比)
when / while +现在分词/介词短语/形容词等构成省略句，但 as 一般不这样用
When,while 和 as的区别