上教版(2020)必修 第一册3 Choices图文课件ppt
展开状语是用来修饰动词,形容词,副词或句子 的一种句子成分
当充当状语的部分是一个句子时,也就是状语从句
如果我们用一个从句来表达一件事情或一个行为发生的时间,那么这个从句就叫时间状语从句。
When he heard the news , he culdn’t stp laughing.
Yu must be careful when yu are crssing the rad.
The bss asked the secretary t hurry up with the letters s that he culd sign them.
The ld man always enjys swimming even thugh the weather is bad.
The children ran away frm the rchard(果园), the mment they saw the guard
我们发现:时间状语从句中存在着引导词
时间状语从句 引导词
when/while/as 当…的时候after 在…之后befre 在…之前until/till 直到as sn as 一…就…since 自从whenever 无论何时
when 意为“当……时”,引导的时间状语从句表示主句的动作和从句的动作同时或先后发生。如:
I feel very happy when yu cme t see me.你(们)来看我时,我感到很高兴。(先后)
When yu are crssing the street, yu must be careful. 你( 们)过街道时,一定要小心。(同时)
(2)when 引导的时间状语从句中,可以用延续性动词,也可以用短暂性动词。如:
Smene kncked at the dr when I was sleeping. 当我正在睡觉时,有人敲门。(延续性动词)
I will visit my gd friend when I arrive.当我到达时,我将去看望我的好友。(短暂性动词)
while 意为“当……时引导的时间状语从句表示主从句的动作在同一时期发生,常用延续性动词或表示状态的词。如:
They rushed in while we were discussing prblems.当我们正在讨论问题时,他们冲了进来。Father was cleaning the car while I was playing cmputer games.(while表示两个动作同时发生)当我正在玩电脑游戏时,爸爸正在清洗汽车。
2.while 的用法
注意:while 也可以作并列连词,表转折的关系,相当于but,译为“然而”。如:
I like listening t music, while my brther likes ding sprts.我喜欢听音乐,而我的兄弟爱好运动。
as 表示“当…时”、“一边…一边…”,强调主语的动作与从句的动作同时发生,如:
As she was dancing , her father was watching TV.
It’s getting clder and clder as the winter cmes.
1.while的用法:(1)while引导的从句的谓语动词必须是延续性的(2)强调主句和从句的动作同时发生(或者相对应)(3)while有时还可以表示对比。
区别:由when ,while ,as引导的时间状语从句
2.when的用法 when 引导的从句的谓语动词可以是延续性的,也可以是非延续性的。
3.as的用法 as 一般强调动作的同时发生,解释为“一边…一边…”
1.I was watching TV ________ my brther was writing an email at hme at this time last night.A.as sn as B.after C.when D.while2.I was cking ______ I heard smene kncking at the dr.A.as sn as B.when C.until D.while3.Rse was ding her hmewrk ______ the bell rang.A.as sn as B.when C.until D.while
引导词when & while 练一练
befre 意为“在……之前”after 意为“在……之后”
区别:由after和befre引导的时间状语从句
1.Laura went t schl by bike ________she had breakfast at hme. A.when B.after C.befre D.while2.Please take the medicine _________ yu g t bed.A.when B.after C.befre D.while3.We shuld wash ur hands _______ we have meals.A. after B. befre C. when D. since
引导词after & befre 练一练
肯定时,用till/until, 表示一个动作一直持续到某一个时刻 “直到…” He slept till/until it was nine next day.2. 否定时,只能用until。即 nt……until…… “直到…才…” They didn’t g t sleep until it was twelve ’ clck.
区别:由until和till引导的时间状语从句
1.—What d yu think f Zhangjiajie? —Excellent!Yu wn't realize hw fantastic it is _____ yu visit it. A.when B.till C.after D.until2. Dale didn't g t bed _______ he finished his hmewrk last night. A.befre B.till C.after D.until3. I will wait fr him here ______ he cmes back. A.befre B.till C.after D.when
引导词 till & until 练一练
since引导的时间状语从句
since 意为“自从。。。”,表示主句的动作从过去某个时间开始一直延续到现在,所以主句必须用现在完成时,since从句用一般过去时。
1.I haven't heard frm Jenny _________ she left Xiadian Middle Schl. A.befre B.after C.when D.since—Lng time n see! —Oh! It ________ five years since we met last time. A. was B. were C. has been D. have been
时间状语从句一般用when提问,但是since用hw lng
as sn as引导的时间状语从句
as sn as 意为“一……就……”,表示从句的动作一发生,主句的动作马上就发生。
1. I will call yu _________ I get t Beijing.A.befre B.whileC.since D.as sn asI will d sme cleaning as sn as I________ my hmewrk. A.finish B.will finishC.has finished D.finished
whenever 引导的时间状语从句
whenever 意为“每当;任何时候,可以用every time 替换
Whenever he has time , he likes playing ftball with his friends.
每当他有时间的时候,他喜欢和他的朋友们踢足球。
1、I always drink cffee when I wrk.2、When he gave me a present, I thanked him.3、We will g ut fr a walk when the weather is fine。
注意since用现在完成时
注意:遵循主将从现原则的时间状语从句有 as sn as ,when , until
1.Aunt Lucy will tell us smething abut her trip t Australia when she ______back. A. came B. cmes C. wuld cme D. will cme2. They wn't g hme until they _______ their wrk. A. finish B. will finish C. finishes D. has finished3. We will have the party if the weather ______ fine. A.will be B. is C. are D. was
条件状语从句中的 if
一、 填空。1. I will phne yu as sn as Jack _______ (cme) back frm Lndn.2. The bell rang while Lily _____ (read) a magazine.3. He went t bed after he _______ (finish) his hmewrk.4. He didn’t stp t have a rest ______(直到) he finished his wrk.5. My sn was playing cmputer games _______(当….时候) I was cking.
was reading
二、根据汉语完成句子1. 明天他一回来,我就告诉他这个消息。As sn as he _______ back tmrrw,I ______ _____ him the news.2.当我在做作业的时候,大明正在看电视。_______ I was ding my hmewrk,Daming _____ ________ TV.3. 汤姆完成那项工作后将去游泳。Tm will g swimming _________ he _______ the wrk.
was watching
will tell
三、用括号内单词的适当形式填空1.The by ________(d) his hmewrk when his mther called him.2.I ______(g) t Beijing fr my summer hliday when this term ____(be) will be excited as sn as he ____(get) t the Great Wall ,my mther________(ck) while my father_________(read) _______(buy) me a CD if I like ften _____(g) hme tgether after the schl finished.
时间状语从句 真题练
—It has been much easier fr me t g t wrk ____shared bikes appeared.—But they als caused plenty f prblems.
Yesterday, I ____________ the subway hme when I suddenly fund I was n the wrng line.
had taken
Tny was drawing a picture ____________ I was ding my hmewrk.
I will call yu as sn as he ____________ here.
—D yu knw when Mrs. White ____ fr dinner this evening?—N, but I think she _____when she is free.
—I want t knw if he ____________ back tmrrw. —I’ll call yu as sn as ____________
It is knwn t all that the day becmes shrter and shrter ____________ winter cmes.
I wn’t g hme ____________ the rain stps.
时间状语从句 模拟检测
— Culd yu tell me when he ____________ back? — Sure. He will cme back as sn as he ____________ the classrm.
Mr. Liu has taught us English ____________ he came t ur schl.
It’s five years ____________ we met last time.
_____ I saw the delivery man(快递员)cycling twards me, I knew that was my gift.
复合句中表示动作发生原因的句子即为原因状语从句
He didn’t cme t schl because he was ill.As it is raining, we shall nt g t the z.Since yu can’t answer the questin, I’ll ask smene else.
— Why are yu late again?— Because there is smething wrng with my bike.
because常回答why引导的疑问句,从句一般位于主句后;why引导的问句,从句一般位于主句前。
because和s不能同在一个句子中。
Because I was afraid, I didn’t g there.Because I was afraid, s I didn’t g there.
because和because f也有明显区别。Because 后面要跟从句,而 because f 后面跟名词短语
He is late fr schl because it rains heavily.He is late fr schl because f the heavy rain.
1. I danced in frnt f the peple _________ I liked it.2. ____ he was nt well, I decided t g withut him.3. ______ everybdy knw abut it, I dn’t want t talk any mre.
because ,since ,as 填空
复合句中表示主句动作发生条件的句子即为条件状语从句
Yu will get gd grades if yu study hard.
条件状语从句分为“真实条件句”和“非真实条件句”
初中阶段我们主要学习“真实条件句”的用法
unless = if … nt
注意:当某种条件引起的结果是一种情绪或想法时,不能用unless 只能用 if … nt
比如:If I was nt invited t the party , I will be very angry.
“主将从现”:条件状语从句要用一般现在时态表示将来的动作。
If it desn’t rain tmrrw, we’ll g t the park.如果明天不下雨的话,我们就去公园。
“主情从现”:条件状语从句中的主句可能是情态动词(can, may, might, must, shuld) + 动词原形的形式。
If yu want t pass the exam, yu must study hard.如果你想考试及格,你就必须努力学习。
“主祈从现”:条件状语从句中的主句可能是祈使句。
If yu see him, please give him this nte.如果你看见他,把这个纸条给他。
【典例1】用动词的正确形式填空。1. If she ____ (be) kind t me , I __________(nt argue) with her.2. I want t knw if he ________(cme) tmrrw, if he _________(cme), I __________(give) the massage t him.
【典例2】—Lucy, what abut ging camping if it ______ tmrrw? —Sunds great! A. didn’t rain B. desn’t rain C. rains D. wn’t rain
【典例3】If there ______ n buying and selling f animals, there ______ n killing in nature. A. is; will be B. will be; will be C. is; is D. will be; is
1.Yu'll be late_____yu dn't get up early tmrrw mrning. A.if B.when C.befre yu_____him tmrrw, please ask him if he____t wrk n the farm with us. A.see; ges B.will see; ges C.will see; will g D.see; will g 3.Yu can’t learn it well _______ yu wrk hard. A. unless B. if C. since D. because
让步状语从句表示即便出现从句中的情况,主句动作仍然会发生
I will try it , althugh I may fail.Thugh he did nt have much mney , he was still happy.
“有退一步说…”的意思
这两个连词意思大致相同,在一般情况下可以互换使用。在口语中,thugh较常使用,althugh比thugh正式,二者都可与yet,still连用,但不能与but连用。
thugh, althugh 表示“虽然;尽管;即使”之意
结果状语从句用来补充说明主句动作发生所带来的结果
The by is s yung that he cannt g t schl.It is such nice weather that I wuld like t g t the park.
结果状语从句常由s… that或such…that引导掌握这两个句型,首先要了解s 和 such与其后的词的搭配规律。1、such 是形容词,后面+名词或名词词组2、s 是副词,后面+形容词或副词 3、s 还可与表示数量的形容词many, few, much, little连用, 形成固定搭配。
在否定句结构中s … that … 可以用 t … t 或 be nt …enugh t d替换
在肯定句结构中s … that … 可以用 be …enugh t d替换
1)s + adj + that从句 eg:It was s cld utside that we had t stp the game. 2) s + adv + that从句 eg:Tm ran s fast that he wn first place.
3) s + many/much/few/little(少) + 名词 + that从句 eg:There was s much wrk t d that Mary gt tired. 4) such+a+形容词 + 名词 + that从句eg:It was such a cld day that we had t stp the game.
s … that 的特殊用法
s … that 可以用在单数可数名词前
She is s beautiful a girl that everyne likes her.She is such a beautiful girl that everyne likes her.
结构为: s + 形容词 + a + 名词 + that
= such + a + 形容词 + 名词 + that
根据句意,用s或such填空。 1. The by is_____ yung that he can't g t schl. 2. He tld us _______ a funny stry that we all laughed. 3. He has ____few bks t read that he has t brrw sme bks frm the library. 4. It is_____ a tall building that I can't see its tp.
1. His mther was _______ busy ______ she can’t lk after Tm. A. s, that B. such, that C. very , that D. t, t2. He was ______ angry that he culdn’t say a wrd. A. s B. t C. very D. much
3.There is ____ little mney that I can’t buy the shirt.A. such B. s C. much D. many4.He was ____ a little by that everyne takes care f him.A. s B. such C. many D. much
目的状语从句用来说明主句动作发生的目的
Say it luder s that everyne can hear yu.We will cme at eight in rder that the meeting can begin early.
引导目的状语从句常用的连词有: s that(以便), in rder that(为了;以便)
s that 和 in rder that 可以进行替换
【注意】in rder that与in rder t的区别:in rder that+从句in rder t+动词原形 (叫目的状语)
状语从句 综合练习
一、单项选择题1.The lazy by didn't g t schl yesterday______he culd play cmputer games at hme. A.t B.s that C.such that D.in rder t2.We will g t the supermarket _______sme fd. A.s that t buy B.s C.in rder t buy D.in buying3.Culd yu keep silent_______we can d sme reading quietly? A.s that B.that C.t D.s
4.He is __ strng __ he can carry the big stne. A.such;that B.s;that C.such a;that D.such an;that5.______he fell ff his bike,____he hurt his leg. A.Because;s B./;because C.Because;/ D./;6.He is_______a weak ld man that he can`t get up by himself. A.such B.s C.t D.very
7.____she is ill all the time,____she never gives up her study. A.Althugh;but B.But;/ C.Althugh;/ D./;/8.She was______tired that she culdn't g t wrk . A.s B.such C.t plays basketball s ______ that we are all prud f him. A.gd B.well C.better D.best
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