Unit4Grammar讲练2024-2025学年牛津译林版英语七年级上册

Unit 4 Grammar（时间介词&频度副词） Grammar A---表示时间的介词(in/on/at) 时间状语往往由介词短语充当，不同的时间所使用的介词也不相同，我们常用in、on或at来表示时间。 at 1.某一时刻 at 4:15 at six o’clock 2.在一日三餐前 at breakfast 3.在无day的节日前 at Christmas 4.在具体年龄前 at 12 (years old)/at 8 years old on 1.在星期 名称前 on Sunday/Monday/Tuesday/Wednesday/Thursday/Friday/Saturday 2.在某月某日前 on 1 September 3.某一天的上午、下午、晚上 on a cold morning/Sunday afternoon 4.特定的节日(一天) on Children's Day/ on May Day in 1.在一天早中晚前 in the morning/afternoon/evening 2.在月份前 in January/February/March/April/May/June/July/August/September/October/ November/December 3.在年份前 in 2008/2022/2100 4.在季节前 in spring/summer/autumn/winter 注意： 如果节日不止一天,而是持续一段时间,我们用at,如: at Christmas/at the Spring Festival。 在没有day节日前用 at。如： 1. Christmas 圣诞节2. Spring Festival 春节 3. Dragon Boat Festival龙舟节 4. Mid-autumn Festival 中秋节 5. Halloween 万圣节前夜 在有day节日前用 on。如： 1.New Year’s Day元旦节 2.Children’s Day儿童节 3.May Day五一节 4.Mother’s Day母亲节 5.Father’s Day父亲节 6.Teachers’ Day教师节 7.Thanksgiving Day 感恩节 Grammar B---频度副词 always, usually, often, sometimes, seldom, never等词被称为频度副词，可与一般现在时连用，表示做某件事的频率。如: He always takes a walk after dinner.他总是晚饭后去散步。 They are never late for school.他们上学从不迟到。 Many Chinese people often pay with mobile phones now.现在很多中国人经常用手机进行支付。 注意: 1.频度副词所表示的频率由高到低为: always (总是)usually(通常)often (经常)sometimes(有时)seldom(很少)never(从不) 2.频度副词一般放在行为动词的前面、助动词do/does和动词be的后面。如： It is usually hot in summer. 夏天天气通常是热的。 My father usually walks home.我的父亲经常步行回家。 We do not often go to the cinema.我们不经常去看电影。 拓展： 1). never 反义词 always ; often 反义词 seldom 2). never和seldom表示否定; sometimes/often/usually/always表示肯定。 3).频度副词还有： every+段时间 (day/week/month---etc) //次数+段时间：once/twice/three times a year---etc 4).sometimes=at times=from time to time 5).sometimes/some times/sometime/some time的区别： sometimes有时some times 一些次sometime 某个时候 some time 一段时间 6).how often是对表示频度副词的时间状语的提问，可翻译为“多久(一次)”。如： ---How often are you late for school? ---Never. ---How often does Eddie walk to his bowl? ---Many times a day. ---How often does Amy go swimming? ---Every week. ★频率副词的注意要点: 1.在简答句中，频率副词必须放在 be 动词或助动词的「前面」。如： ---Are you usually busy at home? ---Yes, I usually am. ---Do they often ride a bicycle to school? ---Yes, they often do. 2.sometimes 通常放在一般动词的「前面」，但也可放在「句尾」。如果要加强语气，则放在「句首」。如： She sometimes goes by car. →一般位置 = She goes by car sometimes. →在句尾 = Sometimes she goes by car. →表示加强语气 3.often 如果被 very 或 quite 修饰时，则放在「句尾」。 He often calls me. →一般位置He calls me very often. →在句尾 4.频率副词usually与sometimes 的特殊位置如下： 1). sometimes + 否定 ( not ): He sometimes doesn’t work on Monday. 2). usually +否定 ( 或否定 + usually ) : It doesn’t usually rain in November. = It usually doesn’t rain in November. 5.频率副词ever与never的用法区別如下： 1). ever ─ 用于「疑问句」。 2). never ─ 用与「否定回答」，句首有 No， 但不可和 not 连用。如：Do you ever play soccer? →ever用于疑问句。 No, I never play soccer. →否定回答。 No, never. →否定简答句。 6.否定词never和seldom可以放在「句首」形成「倒装句」，用于加强句子的语气。如： She is never late to school. → 一般句子 = Never is she late to school. → 倒装句 She seldom watches TV. → 一般句子 = Seldom does she watch TV. →倒装句 7.seldom因具有否定的意味，故不可和「not」连用。如： He is seldom sick. ----------- ( T ) // He is not seldom sick. ------- ( F ) 8.never有时候可放在「助动词」前面，表示加强语气。 He can never use a computer. →一般句子He never can use a computer. →加强语气 9.always如果放在「句首」，是肯定祈使句，后面要接「原形动词」如： Always be a good boy, Tom. → always 在句首； be 是原形动词 never 如果放在「句首」，是否定祈使句，后面要接「原形动词」 Never be late to school, Tom. →never 在句首； be 是原形动词 10.频率副词+ also 如：He sometimes also takes a trip by plane. 即时自测： 一、用适当的时间介词填空。 1.---What time do you get up _____the morning _____ weekdays, Simon? 2.School starts ______ 8:00 ______ the morning. 3.We have Biology classes _____ Tuesdays and Thursdays. 4.We have a field trip ______ autumn. 5.Our new term starts ________September. 6.We have lots of fun ________Children's Day. 7.Fanxian learned to write the article ________ 8 years old. 8.We took a trip to a farm ________ 2022. 9.They play the game _____________ the evening of 31st October. 10.Hey, Alice! Is your birthday ____________ 9 August? 二、按要求完成下列句子。 1.We sometimes dance for half an hour.（改为同义句） We dance for half an hour_______ ______ _______ _______. We dance for half an hour_______ ______. 2.I don’t often have a glass of milk for breakfast. （改为同义句） I _____________ have a glass of milk for breakfast. 3.Amy is never late for school.（划线部分提问） ______ ______ _______ Amy late for school? 4.He seldom takes a taxi to go to school.(划线部分提问) _______ _______ _______he _______ a taxi to go to school? 5.They don’t have lessons every Saturday.(划线部分提问) ________ __________ __________ they ___________ lessons? 6.Daniel wants to visit his grandparents once a week. (划线部分提问) _______ _________ _________ Daniel ___________ to visit his grandparents? 单项选择: 7. Tom _____ to work by bicycle. A. usually go B. go usually C. usually goes D. goes usually 8. We often eat dinner at home on weekends, but ______ we eat out. A. sometimes B. seldom C. never D. always 9. Jerry _____________ for school. A. is often late B. often is late C. is late often D. goes often late 10. I don’t like skiing at all. I __ go skiing. A. never B. always C. often D. sometimes 答案： 一、用适当的时间介词填空。 1.in,on;2.at,in;3.on;4.in;5.in; 6.on; 7.at; 8. in; 9.on; 10.on 二、按要求完成下列句子。 1.from time to time;//at times; 2.seldom; 3.How often is; 4. How often does take; 5. How often don’t have; 6. How often does want 7-10: CAAA 3 学科网（北京）股份有限公司 $$