Unit3 Never give up grammar讲解练习2026-2027学年译林版英语九年级上册

该初中英语讲义通过分类梳理+例句解析的框架构建时间状语从句知识体系，系统涵盖before、after、when等九类连词，清晰区分介词与连词用法、归纳主现从现等时态规则，结合典型例句呈现知识内在逻辑，突出重难点分布。 讲义亮点在于分层练习设计，翻译题提升语言表达能力，填空题强化时态辨析，单选题聚焦语境应用，培养思维品质中的分析与推断能力。基础题巩固用法，综合题提升应用，助力不同层次学生自主复习，为教师实施精准教学提供有效支持。

9A Unit3 Never give up语法 时间状语从句 时间状语从句是指在复合句中充当时间状语的句子，时间状语的连词有： before, after, when, while, as ,since, till/until, as soon as, whenever （1） before 意思是 “在…… 之前”，表示主句的动作发生在从句的动作之前 after 意思是 “在…… 之后”，表示主句的动作发生在从句的动作之后。 1　 before/after后面可以加时间点或动名词，此时before/after做介词 I have to finish my homework before 9 p.m. （我必须在晚上九点前完成作业。） She arrived at the airport before noon. （她在中午前到达了机场。） Before having meals,we should wash our hands carefully. After finishing high school, she began to learn fashion design. I will retire after 65.（我将在65岁之后退休） 2　 before/after后面可以加句子，此时before/after做连词，起连接作用, Before I went to bed, I checked the doors and windows. （在我上床睡觉之前，我检查了门窗。） Before the accident happened, everyone thought he would win. We should eat dinner before we watch TV. （我们应该在看电视之前吃晚饭。） It will be four days before they come back. 他们要过四天才能回来。 I made it to the competition after I kept trying for two years. （2） when 意思是 “当…… 时”，表示主句的动作发生的特定时间。 The days get longer when spring comes. 春天到来时，白天变长了。（时态：主现从现） When spring comes, I'll work hard like you.当春天来临时，我将像你一样努力工作。（时态：主将从现） Lucy turned on the radio when she went back home.（时态：主过从过） It was raining when we arrived at the station. 我们到达车站时，正在下雨。（表示当某个短动作发生时，另一个长动作正在发生） When I was having dinner, the phone rang.（表示当一个长动作正在发生时，另一个短动作突然发生了） （3） while的用法 ，表示“当……时候”，引导的动作必须是延续性的，表示在这个时间段内、在这个过程中，发生了主句的动作。 While my sister was sweeping the floor, I was washing the dishes.我姐姐扫地时，我在洗碗。（两动作同时进行） While I was having dinner, the phone rang.（当我在吃晚饭的时候，电话响了） 在 when 和 while 引导的从句中，当主句和从句的主语一致，并且从句中有 be 动词时，从句可以省略主语和 be 动词，构成 “when/while + 动词 - ing / 介词短语” 结构。 While (I am) travelling, I like to buy some souvenirs. 旅游时我喜欢买些纪念品。 When (she is) in trouble, she always asks for my help.她遇到困难时总是向我求助。 （4） since “自从…… 以来”。since从句谓语动词用一般过去时，主句的谓语动词用现在完成时。 They have been friends since they were at primary school.他们从小学起就一直是朋友。 （5） till 和 until “到…… 为止”，一般情况下两者可以互换，但在句首一般不用 till，而用 until。此外，till 不如 until 正式。 Walk till/until you see a red house. 一直走到你看到一座红房子为止。（主祈从现） I did my homework until my father came home yesterday. （时态：主过从过） She works until the job is done. （她一直工作，直到任务完成（时态：主现从现） I will wait here until you come back.（主将从现） 当主句是否定句（not...until）时，表示“直到……才”，此时主句谓语通常是瞬间动词 The meeting will not start until everyone is seated. （会议直到所有人都坐好才会开始。） I did not go to bed until I finished the housework.直到做完家务我才上床睡觉。 （6） as soon as 意思是 “一…… 就” We began to work as soon as we got there. 我们一到那里就开始工作。（主过从过） He will visit you as soon as he gets there. 他一到那里就会去拜访你。（主将从现） （7） whenever 意思是 “每当；无论何时”。 He likes listening to music whenever he has time.每当他有时间的时候，他喜欢听音乐。 翻译练习： 1. 我一收到你的信就会给你回信。 _________________________________________________________ 2. 自从我来到这里，我就认识他了。 _______________________________________________________ 3. 直到雨停了我们才出去。 _______________________________________________________ 4. 当我正在做作业的时候，电话铃响了。 _______________________________________________________ 5. 每当我遇到困难，他都会帮助我。 _______________________________________________________ 6. 在你睡觉之前，记得刷牙。 _______________________________________________________ 7. 我会一直等你，直到你回来。 _______________________________________________________ 8. 她正在看书的时候，她的妈妈回来了。 _______________________________________________________ 填空 1. It was raining hard when I __________ (get) to school yesterday. 2. While he __________ (do) his homework, the telephone rang. 3. As he __________ (walk) along the lake, he sang happily. 4. After he finished middle school, he __________ (go) to work in a factory. 5. I’ll ring you up as soon as I __________ (get) to New York. 6. Let me know as soon as you _______(offer) the job. 7. I had my finger cut while I ___________(divide) the watermelon into pieces. 8. The boy_________(take) to hospital at once after he fell off the tree. 单选 1. ( )－Who will be the winner of the speech contest? －No one can know the result until it ____________tomorrow morning. A. will announce B. will be announced C. is announced D. announces 2. ( )---Excuse me, Mum. When can we have dinner? ---Not until it ___________ in half an hour. A. is prepared B. will be prepared C. has been prepared D. was prepared 3. ( )Lucy didn’t go to bed ________ she finished her homework last night. A．after B．as soon as C．until D．while 4. ( )—Did you catch the early bus this morning?—No, the bus started to move ________ I could get on it. A．when B．before C．until D．after 5. ( )---How long did you stay with your friend Tony in the café last night?----______9:30 p.m. A.At B.Since C.Until D.Whenever 6. ( )While I _______along the street, a running boy ______into me from behind. A.was walking, knocked B.walked,was knocking C.was walking,was knocking D.walked, knocked 7. ( )---You have been in Nanjing very long ?--- Yeah, ________ my parents came here. A. For B. As C. When D. Since 8. ( )Many people do not realize the importance of health _______ they have fallen. A. until B. while C. when D. after 9. ( )Amy was reading a book ________ I came in. A. when B. while C. because D. though 10. ( )I’ll go to visit my aunt in England ______the summer holidays start. A. while B. since C. until D. as soon as 11. ( )I was watching TV _________ my brother was writing an e-mail at home at this time yesterday. A. as soon as B. after C. until D. while 12. ( )It __________ ten years since he left the army. A. is B. are C. has D.was 13. ( )China doesn’t have a strong football team. Maybe it will be hundreds of years _______ the Chinese team wins the World Cup. A. before B. since C. after D. when 1 学科网（北京）股份有限公司 $