时间状语从句讲义-2024-2025学年江苏牛津译林版英语九年级上册

时间状语从句 一、定义 时间状语从句是指在复合句中充当时间状语的句子。 二、分类 （一）before、after、when和 while 引导的时间状语从句 1、教材原句 （1）After he graduated, he was forced to play in another basketball league.毕业后，他被迫在另一个篮球联盟打球。（教材P54） （2）When he finally got the chance, he scored 20 points in his firstgame．当他最终得到机会时，他就在首场比赛中得了20分。（教材P54） 2、用法 我们可以用 before、after、when 和 while引导时间状语从句，这些连词既可放在句首，也可放在句中。 考点1：before 引导的时间状语从句 She worked in Shanghai before she came here. 她来这儿之前在上海工作。 before意为“在·······之前”，表示主句动作发生在从句动作之前。 Close the windows before you leave the room,please.你离开房间前请关上窗户。 例：( ) 1. It is necessary to ask your parents or teachers for some advice you make the final decision. A. because B. unless C. before D. after 考点2：after 引导的时间状语从句 after意为“在······之后”，表示主句动作发生在从句动作之后。 After you think it over, please let me know your decision. 你仔细考虑以后，请告诉我你的决定。 I went to school after I finished my breakfast. 我吃完早饭后去上学了。 例：( ) 2. My cousin became a country doctor he finished medical school. A. after B. so that C. but D. so 考点3：when 引导的时间状语从句 when意为“当······时”，表示主句动作发生的特定时间。when引导的从句中的谓语动词可以是延续性动词，也可以是非延续性动词。 When I got home, my mother was cooking dinner. 当我到家的时候，我妈妈正在做晚饭。 I loved history when I was at school. 我上学时喜欢历史。 考向4：while 引导的时间状语从句 while 意为“在······期间”，表示主句动作发生在从句动作进行的过程中。 注：while引导的时间状语从句的谓语动词应为延续性动词。 Love your parents while they are alive. Don't wait until it is too late. 父母在世的时候就爱他们，不要等到一切都太迟了。（苏州中考） While she was listening to the song,she fell asleep.她听着歌睡着了。 拓：（1）while还可意为“当······时”，强调主句动作和从句动作是同时发生的，此时主从句通常用进行时态。 While my sister was sweeping the floor, I was washing the dishes. 我姐姐扫地时，我在洗碗。（主从句均为过去进行时） （2）while还可意为“而；然而”，表示对比。 I like playing football while my brother likes playing basketball. 我喜欢踢足球，而我的哥哥喜欢打篮球。 特别提醒： 在含有when／while引导的时间状语从句的复合句中，当主句和从句的主语一致，并且从句谓语有be动词时，可以省略从句中的主语和be动词。 When (she is) in trouble,she always asks me for help. 她遇到困难时总是向我求助。 While (I am) travelling, I like to buy some souvenirs. 旅游时我喜欢买一些纪念品。 例：( ) 3. Lisa was busy taking notes Mark was giving a talk. A. if B. unless C. until D. while （二）since、till和 until 引导的时间状语从句 1、教材原句 （1）You've been happy since I first met you．自从我第一次见到你，你就很快乐。（教材P55） （2）Do not wake me up until you finish your work．直到你完成你的工作再叫醒我。（教材P55） 考点1：since 引导的时间状语从句 since作连词，意为“从······以后，自······以来”，引导时间状语从句，此时从句常用一般过去时，对应的主句多用现在完成时。since引导的从句的谓语动词可以是延续性动词，也可以是非延续性动词。Great changes have taken place in our hometown since you left. 自从你走后，我们的家乡已经发生了很大的变化。 I have wanted to be a pilot since I was a child. 我从小就想当一名飞行员。一般过去时 拓：（1）since作连词，还有“因为；既然；由于”之意，引导原因状语从句。 Since you know you did something wrong, you'd better make some changes. 既然你知道自己做了错事，你最好做出一些改变。 （2）since还可作介词，意为“自······以后”，后常接表示时间的单词或短语，句子的时态常用现在完成时，且在肯定句中谓语动词要用延续性动词。 She has been here since seven o'clock this morning. 她从今天早上七点钟就一直在这儿。 例：1. China (win) lots of praise since we turned the sand into forests. 考点2：till 和 until 引导的时间状语从句 till与until意为＂直到······为止”，一般情况下两者可以互换。until可以放在句首或句中，而till不可以放在句首。 I will wait for you until/till you come to see me. 我会一直等，直到你来看我。 Until she spoke I hadn't realized she was English. 直到她开口说话，我才知道她是英国人。 特别提醒 如果主句中的谓语动词是非延续性动词，该动词必须用否定形式，构成“not...until／till＂结构，意为＂直到······才”，表示某动作直到某时间才开始。 I did not go to bed until／till I finished my homework. 直到做完家庭作业，我才上床睡觉。 拓：until还可用作介词，意为“直到······为止”，后接表示时间的名词或短语。 I was awake until 2 a.m. last night． 我昨晚直到凌晨两点还没睡着。 Don't give up until the last minute. 不到最后一刻不要放弃。 例：( ) 4. My parents gave red packets to my cousin every Spring Festival she got a job, because she said she was able to make money. A. after B. when C. until D. since （三）as soon as和whenever 引导的时间状语从句 1、教材原句 （1）It began to rain as soon as I left the house．我一离开家，天就开始下雨了。（教材P56） （2）I can read books whenever I want to．我想看书时，随时都可以看。（教材P56） 考点1：as soon as 引导的时间状语从句 as soon as 意为“一······就”，引导时间状语从句时，可以放在句首或句中。 As soon as I got to the bus stop, the bus started. 我刚到公共汽车站，公共汽车就开动了。 I will call you as soon as I get to Beijing. 我一到北京就给你打电话。 例：( ) 5. he heard the little girl crying for help outside, he rushed out of the room. A. As soon as B. Unless C. If D. Although 考点2：whenever 引导的时间状语从句 whenever意为“每当；无论何时”，相当于every time。 Whenever/Every time I have a cold, I get a fever. 我每次感冒都会发烧。 You can ask for help whenever/every time you need it. 你如果需要帮助随时可以提出来。 特别提醒： 在含有时间状语从句的主从复合句中，当主句是一般将来时、主句的谓语含有may、can、must等情态动词或主句是祈使句时，从句通常用一般现在时表示将来。 I'll ring you up as soon as I arrive in Shanghai. 我一到上海就给你打电话。 We should get to the town before the sun sets. 我们应该在日落前赶到那个镇上。 Don't answer the phone when you cross the street. 过马路时不要接听电话。 例：( ) 6. Miss Zhao is very helpful. She helps uswe are in trouble. A. whether B. although C. whenever D. however 学科网（北京）股份有限公司 $$