Unit8语法讲解及习题：时间状语从句 & used to _ didn’t use to - 2025-2026学年沪教版英语七年级下册

沪教英语七下Unit8语法讲解及习题 时间状语从句 & used to / didn’t use to 一、语法1：时间状语从句（Adverbial clauses of time） 1. 定义 时间状语从句用于说明主句动作发生的时间，由when/as/before/after/while/as soon as/until等引导词连接两个分句，是七下核心语法考点。 2. 核心引导词用法 引导词 含义 用法说明 例句 when 当……时候 1 动作可同时/先后发生 ② 后接时间点/短动作 When I was 10, I started learning to play the piano.（我10岁时开始学钢琴。） as 随着；一边……一边…… 强调动作伴随/同时进行（长动作） As I practised the piano, I fell in love with music.（随着练琴，我爱上了音乐。） before 在……之前 动作有先后顺序（A发生在B之前） Before I joined the school band, I took piano lessons for 5 years.（加入校乐队前，我学了5年钢琴。） after 在……之后 动作有先后顺序（A发生在B之后） After I won the piano competition, I decided to be a musician.（赢了钢琴比赛后，我决定当音乐家。） while 当……时候 强调两个长动作同时进行 While I was playing the piano, my teacher was listening carefully.（我弹钢琴时，老师在认真听。） as soon as 一……就…… 动作紧接着发生（前后衔接紧密） I will call my parents as soon as I get the music school’s offer.（一拿到音乐学院的录取通知，我就给父母打电话。） until 直到……为止 动作持续到某个时间点（不考否定形式） I will keep practising until I can play the song perfectly.（我会一直练习，直到能完美演奏这首歌。） 3. 时态规则（七下必记） 主句是一般将来时，从句用一般现在时表将来： I will become a pianist when I grow up.（我长大后要当钢琴家。） 主句是一般过去时，从句用一般过去时： After I finished my homework, I practised the piano.（做完作业后，我练了钢琴。） 二、语法2：used to / didn’t use to 1. 定义 用于描述过去常做但现在不做的动作/状态（体现“今昔对比”，贴合“兴趣变化”主题）。 2. 核心结构 句型 结构 例句 肯定句 主语 + used to + 动词原形 I used to play the piano for 1 hour every day.（我过去每天弹1小时钢琴。） 否定句 主语 + didn’t use to + 动词原形 I didn’t use to like playing the guitar.（我过去不喜欢弹吉他。） 一般疑问句 Did + 主语 + use to + 动词原形？ Did you use to take music lessons?（你过去上过音乐课吗？） 三、练习题 （一）基础题 用when/as/before/after/while/as soon as/until填空。 1. I started learning painting __________ I was 8 years old. 2. __________ I practised painting, my skills got better and better. 3. __________ I won the art competition, I got a chance to study with a famous painter. 4. I will tell my friends __________ I finish my first painting. 5. __________ I go to the art studio, I always bring my paintbrush. 6. __________ my teacher was teaching me, I was taking notes carefully. 7. I will keep painting __________ I become a professional artist. 8. __________ I decided to be a painter, I talked with my parents. 9. __________ I was drawing, my little sister was watching beside me. 10. I felt excited __________ I saw my painting in the school exhibition. （二）基础题：used to / didn’t use to 填空 1. I __________ (play) the violin, but now I play the piano. 2. She __________ (not like) sports, but now she loves playing basketball. 3. We __________ (go) to the library every weekend, but now we go to the art studio. 4. He __________ (be) shy, but now he likes talking about his paintings. 5. __________ you __________ (take) dance lessons?（改为一般疑问句） 6. They __________ (not watch) music shows, but now they watch them every day. 7. My brother __________ (collect) stamps, but now he collects painting brushes. 8. __________ your sister __________ (play) the guitar?（改为一般疑问句） （三）提升题：单项选择 1. I fell in love with writing __________ I read my first novel. A. when B. as C. while D. until 2. __________ I was doing my homework, my mom was preparing dinner. A. When B. As C. While D. After 3. I __________ play football, but now I play tennis. A. use to B. used to C. didn’t use to D. uses to 4. __________ I finish my painting, I will show it to my teacher. A. As soon as B. Before C. After D. Until 5. Did you __________ take piano lessons? A. use to B. used to C. use D. used 6. I will wait __________ you come back. A. when B. as C. until D. after 7. __________ I joined the writing club, I made many friends. A. When B. After C. Before D. As 8. She __________ like reading, but now she reads 2 books a week. A. use to B. used to C. didn’t use to D. doesn’t use to （四）综合题：句型转换+完成句子 1. I used to play the guitar.（改为否定句） _____________________________________________________________________ 2. When I was 12, I started learning to dance.（对划线部分提问） _____________________________________________________________________ 3. I will become a writer when I grow up.（改为一般过去时） _____________________________________________________________________ 4. （汉译英）我过去不喜欢画画，但现在我想成为一名画家。 _____________________________________________________________________ 5. （汉译英）我一完成作业，就会练习弹钢琴。 _____________________________________________________________________ 6. （补全句子）As I __________ (practise) the guitar, I __________ (realize) I wanted to be a musician. 四、答案与解析 （一）基础题：时间状语从句引导词填空 1. when（后接时间点“8岁”） 2. As（强调“练画”与“技能提升”伴随发生） 3. After（“赢比赛”在“得到机会”之前） 4. as soon as（“完成画作”后紧接着“告诉朋友”） 5. Before（“带画笔”在“去画室”之前） 6. While（“老师教”和“我记笔记”是长动作同时进行） 7. until（“练习”持续到“成为职业画家”） 8. Before（“和父母谈”在“决定当画家”之前） 9. While（“我画画”和“妹妹看”是长动作同时进行） 10. when（“看到画作”是短动作） （二）基础题：used to / didn’t use to 填空 1. used to play（过去常做，现在不做） 2. didn’t use to like（过去不喜欢，现在喜欢） 3. used to go（过去常做，现在不做） 4. used to be（过去的状态，现在改变） 5. Did; use to（一般疑问句，did后接use to） 6. didn’t use to watch（过去不做，现在做） 7. used to collect（过去常做，现在不做） 8. Did; use to（一般疑问句，did后接use to） （三）提升题：单项选择 1. A（when后接短动作“读小说”） 2. C（两个长动作同时进行，用while） 3. B（used to表“过去常做”） 4. A（“完成画作”后紧接着“给老师看”，用as soon as） 5. A（一般疑问句中did后接use to） 6. C（“等待”持续到“你回来”，用until） 7. B（“交朋友”在“加入写作俱乐部”之后，用after） 8. C（“过去不喜欢，现在喜欢”，用didn’t use to） （四）综合题 1. I didn’t use to play the guitar.（否定句：didn’t use to） 2. When did you start learning to dance?（对时间提问用when，过去时加did） 3. I became a writer when I grew up.（一般过去时：will become→became；grow→grew） 4. I didn’t use to like painting, but now I want to be a painter.（“过去不喜欢”用didn’t use to） 5. I will practise playing the piano as soon as I finish my homework.（“一……就……”用as soon as，主将从现） 6. practised; realized（主句+从句均为过去时，贴合时态规则） ( 1 ) 学科网（北京）股份有限公司 $