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1)when,while,as ① when可表动作同时发生或先后发生,从句动
词延续非延续都行。 如: When he finished the work, he had a
little rest. while 表动作同时发生,从句动词必须可延续 。 如: Please keep quiet while she was sleeping. as表动作同时发生;从句动词延续非延续都行 ,常指一边…一边,as还可以说明两种正发展 或变化的情况,有“随着”的意思,表时间的推 移。 如:He sang as he went along.
终止性动词,这时till和until可用before 替换。如:
• I waited till/ until he arrived. • We won't start until Bob comes. • =We won't start _b_e_fo_r_eBob comes.
1. He ___to the bed until his mother
• 5)since: • 表示 “自从…以来”,从句中常用_过__去_时
,主句用___一_般__现__在__时__或_现__在__完__成_时,主句 动词要用__可__延_续__性__动词.(对since 引导的 时间状语提问要用how long).如:
• Where have you been since I saw you last time?
C. before
• 4) as soon as
• 表示主句发生的动作发生在从句动作之 后, 意为“一…就…”。如:
• My brother went out as soon as I got home.
• I'll phone you as soon as I arrive in Beijing.
2. My mother was cooking __ I was
doing my homework.
A. when B. while C. before
3. ___ the day went on, the weather
got worse.
A. While
B. When
C. As
4.Summer is here, and the warmth is
As I get older, I have more confidence.
2) before, after before “在……之 前”。 after “在…… 之后”。如:
They had already had breakfast before they went to school.
They talked about the party after the people left.
came back .
A. didn’t go B. went C. goes
2. You can ___here until the rain
stops.
A. come B. get C. stay
3. We won’t know the importance of
health ___ it has gone.
A. stop B. stops C. is stopping 3. When you __ the office, you’d better __ that the lights are turned off. A. will leave;make sure B. will leave;make sure C. leave;make sure
making us sleepy, but please stay
awake __our teachers are talking.
A. while B. since
C. before
• 3) until, till • until和till • 在肯定句中译为 • “直到……为止”,主句要用延续性动词 • 在否定句中 译为 • “直到……才”,主句动词不受限,常用
也可置主语之后。前置时,从句后用逗号与主句分 开;后置时,与主句之间无标点符号。命题主要
集中在引导状语从句的连词、状语从句的时态等方面;
从九大状语从句来看,应将复习重点放在时间状语从 句、条件状语从句、目的状语从句、结果状语从 句和比较状语从句上。
1.时间状语从句
引导时间状语从句的连词有: while, when, as, as soon as, till, until, not…until, before, after, since, etc.
注意: 时间状语从句的时态
1)主将,从现(when,before,after, until,as soon as 引导从句时):
The boy will be a writer when he grows up.
2) Байду номын сангаас情,从现:
When the lights are red, the traffic must stop.
(2010.衢州中考) You should go over your test paper _____ you hand it in . A. before B. though C.as soon as
1.He was working at the table __ I
went in .
A. when B. while C. as soon as
4. —Can you guess if they___speaking English with us?
—I think they will do if they___free. A. will practice, are B. will practice, will be C. practice, will 5. Your dream won’t come true__
(同义句)
=You will fail if you don't study hard. 3)as long as 只要 I will go there as long as he invites me.
4)“祈使句 + and (or)+ 陈述句” 在意思上相当 于条件状语从句。例如: Hurry up, or you’ll be late.
=If you don’t hurry up, you’ll be late. Study hard and you will pass the exam. =If you study hard, you will pass the exam. 5)用介词with, without可以把条件状语从句改
• I liked reading when I was young.
• She was watching TV while I was reading.
1. We will set out as soon as our monitor___ .
A. comes B. coming C. will come 2. You can stay here until the rain ___.
1. I don’t know if he __ tomorrow. If he __, I’ll meet him .
A. will come;comes B. comes;comes C. will come; will come 2. ______ you gave a party and no one come, what would you do? A Although B. If C.Unless 3.you won't pass the exam ___you work hard. A Although B. If C.Unless
6.---Do you know when he ___? ---When he ____, I will tell you. A. will come; comes B. comes; coming C. comes; will come
2. 条件状语从句
1)引导条件状语从句的连词有if(如果)、 unless(除非)等,条件状语从句也像时 间状语从句一样,如果主句用将来时,从句 要用现在时代替将来时。如:What shall we do if it snows tomorrow? Don’t leave the building unless I tell you to. 2) unless在意义上相当于if...not。 You will fail unless you study hard.
A. when
B. until C. before
4.---Life is like a box of chocolates.
--- I see! We’ll know the taste of
life_______we’ve eaten the box of
chocolates.
A. when B. until
写成简单句: If there is no water, the fish may die. = Fish may die without water. If you help me, I’ll finish my task on time. = With your help, I’ll finish my task on time.
you know what your dream is. A. after B. unless C. if
3. 比较状语从句
比较状语从句通常由as…as, 比较级 + than… 等连词引导,比较连词前后的结构要一致。
Tom runs faster than John does. This classroom is as big as that one. 1)表示甲与乙在某一方面相同时 肯定:“as+原级+as”句型; 否定:“not as /so +原级+as” 如: Dalian is as beautiful as Shenzhen. I don't run as/ so fast as Lucy.= I run less fast than Lucy. 2)表示甲超过或不及乙时,用“比较级+tha n从句”(从句中常省略意义与主句相同的部分。 He runs faster than you(do). Today is less cold than yesterday.= Today isn’t as cold as yesterday.