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第24期语法运用 grammar in use一、if引导的条件句我们在七年级时已经学过结构为 “主句用一般将来时, if引导的从句用一般现在时” 的条件句来谈论可能发生的事件。if从句的一般现在时用于表述可能发生的动作或情况, 主句用一般将来时表述条件成立时可能产生的结果。例如:1. if you walk along the road, you will see many buildings.如果你沿着这条路走, 你会看见许多建筑。2. you will not feel tired in the morning if you go to bed early at night.如果你晚上早点睡, 你早上就不会感到累。 今天, 我们来学习if条件句用来表示条件和结果之间存在必然联系的用法。当表示客观事实、结果时, if条件句的主句和从句都用一般现在时。1. if you hit the window with a hammer, it breaks.如果你拿榔头砸窗户, 它会破裂。2. the room becomes bright if you turn on the light.如果你打开灯的话, 房间会变明亮。【语法笔记】1. if从句可以放在句首, 也可以放在句末。 如果把if从句放在句首, 常用逗号将其与主句分开。例如:if the temperature is below zero, water turns into ice. water turns into ice if the temperature is below zero. 如果温度低于零摄氏度, 水就会变成冰。2. if引导的条件状语从句中通常不用一般将来时。在需要表达将来含义时, 一般用现在时表示。二、if not和unless1. ifnot和unless都可以用来引导条件状语从句, ifnot表示 “如果不”, 而unless表示 “除非”。当它们引导条件状语从句时, 可以互相转换。例如:if you dont finish your homework, i wont let you play outside.如果你不完成你的作业, 我不会让你出去玩。= unless you finish your homework, i wont let you play outside.除非你完成你的作业, 否则我不会让你出去玩。2. ifnot和unless引导的从句和主句的位置可以互换。但是当从句在前, 主句在后时, 一般用逗号隔开, 反之, 则不用逗号。if she doesnt start off now, she will be late. she will be late if she doesnt start off now.如果她现在不出发, 她会迟到。unless she starts off now, she will be late. she will be late unless she starts off now.除非她现在出发, 否则她会迟到。【语法笔记】1. 在unless引导的从句里, 通常用现在时表示将来。例如:unless you have a better idea, ill take his advice.除非你有更好的主意, 否则我将听取他的意见。2. unless用于引出某事发生或成立所必需的条件。例如:you should not promise anything unless you can do it.除非你能做到, 否则不要随便许诺。实战演练i. 根据句意, 用if或unless填空。1. _ you put paper into a fire, it burns.2. i wont let you play football _ you finish cleaning your bedroom.3. well have to stay in the classroom _ it keeps snowing.4. _ you work hard, you wont pass the english exam.5. its easy to remember the new words _ you have a good memory.ii. 将下列单词或词组连接成句。6. i, get, wont, abroad, if, dont, go, chance, the, i (.)_7. go, she, every, no, she, shopping, day, will, money, unless, has (.)_8. a, it, candle, you, burns, light, if (,) (.)_9. my, me, the, surf, i, mother, my, finish, internet, wont, homework, let, unless (.)_10. bus, we, if, a, take, it, be, will, cheaper(.)_iii. 用括号中的词或结构将下列句子转换为同义句。11. i wont go to sleep if i dont finish my homework. (unless)_12. unless you receive the invitation, you cant go to the meeting. (if .not)_13. if you cant remember the passage, you must read it again and again. (unless)_14. you wont live here unless you have enough money. (if .not)_15. if you dont finish your work, the boss wont let you go. (unless)_16. he wont stop playing computer games unless he is tired. (if .not)_iv. 单项选择( ) 17. playing with these kids is necessary _ you want to make friends with them. a. if b. until c. unless d. though( ) 18. kitty will spend more time with her children if she _ a mother. a. becomes b. become c. became d. becoming( ) 19. mary often walks the dog in the afternoon _ bad weather stops her. a. when b. unless c. because d. since( ) 20. _ you ring tony, he wont know about the party on friday. a. if b. when c. unless d. however( ) 21. if you drop a mirror(镜子), it _. a. breaking b. break c. broke d. breaks短语收藏夹 phrase collectionunit 7短语聚会1. take out (从银行账户中) 提取 (款)2. pour out of 从中涌出3. stay relaxed 保持放松4. switch off 关掉5. turn into 变成6. o. 把放进里面7. get a toothache 牙疼8. a balanced diet 均衡的饮食9. slow down (使)放慢速度; 松劲10. in the middle of 在中间11. at the beginning 开始12. make a funny noise发出奇怪的声音13. exercise ones brain锻炼某人的头脑14. live a healthy life 过着健康的生活【操练场】 根据句意从上面选择适当的短语并用其正确形式填空, 补全句子。1. _, i didnt know him, but later we became good friends.2. _ the lights when you leave the classroom.3. mrs green _ a lot of money from the bank just now.4. if you _, you shouldnt eat sweet food.5. people _ the building after it caught fire.6. _ when you take an exam.7. if you feel tired when you are running, you can _.8. the tall man standing _ the crowd seems upset.9. when the water boils, _ the rice _ the boiled water.for unit 7section a (for grammar)i. 连接下面分句, 组成条件句。( ) 1. if bears feel in danger, a. you get wet.( ) 2. you get four b. if you heat ice.( ) 3. if you pour oil in water, c. it floats.( ) 4. you will miss the train d. if you divide eight by two.( ) 5. if you go out in the rain, e. they attack people.( ) 6. unless you study hard, f. you wont pass the examination.( ) 7. it turns into water g. if you dont hurry up.( ) 8. she will keep on singing h. if it doesnt rain tomorrow.( ) 9. we will go on a picnic i. i shall not know whether i can get what i want.( ) 10. unless i visit every bookstore in the town, j. unless she is told to stop.ii. 用括号中动词的正确时态完成条件句。11. if there _ (be) a lot of traffic, our journey _ (take) a longer time.12. if you _ (sleep) badly at night, you often _ (feel) tired the next day.13. our brains_ (work) better if we _ (be) healthy.14. unless you _ (return) the books to the library, you _ able to borrow more books.15. your dad _ (let) you go out to play unless you _ (tidy) up your bedroom.iii. 根据句意, 选用if或unless连接句子。16. fish die. there is no water._17. my baby sister never cries. she is hungry._18. i run every morning. bad weather stops me._19. you arent careful. you will make a mistake._20. im free this sunday. i will visit you. _section b (for speaking)i. 根据汉语提示写单词, 补全句子。每空一词。1. 我过去常常吃肉, 但现在吃得很少了。i _ _ _ meat, but now i eat much less.2. 今天是我人生中最好的一天, 因为我见到了我最想见的人。today is _ _ _ _ _ _ because i saw the person i wanted tomeet most.3. 我对刚才所发生的一切感到不适应。i _ _ _ what happened just now.4. 我不理解你所说的, 能给我举个例子吗?i dont understand what you said. can you _ _ _ _?5. 很高兴见到你, 我将带你游览这个地方。_ _ _ _ ill show you around this place.ii. 阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空格处填入一个适当的词或使用括号中词语的正确形式填空。therere many methods to have (6) _ good memory, such as associating, creating images, developing (7) _ interest in the subject (8) _ having a break or rest.some people have (9) _ (good) memory than others (10) _ they are better at (11) _ (create) images. when things come to their brain, they will recall swiftly (敏捷地). (12) _ addition, building a connection helps people connect one thing with another. a study shows that practice can improve (13) _ (we) memory. for example, we develop our abilities to solve maths (14) _ (problem) by doing a lot of exercises. more importantly, we should (15) _ (have) a break or rest after learning for a long time because having a rest helps our brains to make new connections.section c (for writing) 根据汉语提示写单词, 补全句子。每空一词。1. 你等我一下, 我从银行取些钱给你。please wait for me for a while, and i will _ _ some money from the bank for you.2. 当我跟朋友在花园玩时, 我突然听到有只猫发出奇怪的声音。when i played with my friends in the garden, i suddenly heard a cat _ _ _ _.3. 我昨天梦到许多钱从机器中涌出。yesterday, i dreamt lots of money _ _ _ _ _.4. 新学期开始, 大家都渴望见到他们的老同学。_ _ _ of the new term, everyone is eager to see his or her old classmates.5. 我家在这栋楼的中间位置。my home is _ _ _ of this building.6. 记得把这张相片放到你的钱包里。remember to _ the photo _ _ _.7. 我这里没有硬币, 只有些纸币。i dont have coins with me, just _ _.8. 你们已经连续工作了六个小时, 请停下来休息一会儿。you have kept working for six hours. please _ _ _ _ _.9. 最后, 我们没有完成工作, 因为所给的时间不够。_ _ _, we didnt finish the work because we didnt have enough time.10. 在公共场合发表演讲对我来说是一个特殊的记忆。making a speech in public is _ _ _ for me.section d (for more practice) i. 从方框中选择合适的短语, 并用其适当的形式完成句子。exercise ones brain, live a healthy life, a balanced diet, slow down, lots of1. people should have _ every day because its good for their health.2. if you want to have a good memory, you should often _.3. everyone has to _ to keep healthy. 4. _ regular exercise makes your brain become sharp.5. if you dont often get enough sleep, you brain will _.ii. 根据汉语提示写单词, 补全句子。每空一词。6. 这周末你计划做什么?what do you _ _ _ this weekend?7. 每天有一个好的睡眠很重要。_ _ _ _ a good sleep every day.8. 我们必须给大脑足够的时间休息。we must _ our brains _ _ _ _.9. 考试之前要保持放松的状态。_ _ before your exams.10. 如果你尝试一些新事物, 你就能保持大脑活跃。if you try something new, you can _ _ _ _.听说训练八年级英语unit7听说题i. 听录音, 从a、b、c三个选项中选出与你听到句子意思最相近的句子。(句子念两遍) (共5小题,每小题1分)( ) 1. a. sometimes its easy to remember interesting things. b. sometimes its not difficult to remember exciting things. c. sometimes exciting things are easy to forget,( ) 2. a. i have no difficulty remembering the names of the students. b. i try remembering the names of these students. c. i have difficulty remembering the names of these students.( ) 3. a. a good way to remember something is to look at a picture of it in the book. b. a good method for remembering something is to draw a picture of it in the paper. c. a good way to remember something is to imagine a picture of it in your brain.( ) 4. a. if you dont understand things well, you will forget them quickly. b. if you understand things well, you remember them very easily. c. you will forget the things very quickly even if you understand them well.( ) 5. a. if you switch off the lamp, the living room becomes dark. b. if you turn off the lamp, the room becomes dark. c. if you turn on the lamp, the room becomes light.ii. 请根据实际情况和所提供的情景完成对话。(问题念两遍)(共3小题,每小题1分) 记忆是人类心智活动的一种,属于心理学或脑部科学的范畴。记忆代表着一个人对过去活动、感受、经验的印象累积,有关记忆你又了解多少呢?请回答所提问的问题:6._7. _8. _iii. 听短文,回答问题。(短文及问题念两遍)(共3小题,每小题1分)9. _10. _11. _iv. 请用英语描述下图, 至少六句话。(共4分)_写作一招鲜writing tips【写作目标】 你们班召开了主题为“记忆”的班会,同学们在班会上积极发言,用英语分享各自的记忆。你有一段特别难忘的记忆,请你写一篇文章和同学们分享一下你的那段记忆。词数:80词左右。【写作步骤】审题(一)人称:分享自己的难忘的记忆,多用第一人称;(二)时态:讲述过去的记忆,多用一般过去时;(三)书写正文:先想好哪段记忆特别难忘,然后构思,最后开始写作;(四)检查全文:时态、人称和文章内容的完整性和合理性。联想:写作本篇作文可能用到的词汇、短语:unforgettable(难忘的),share.with.,give ones seat to, pretend to(假装),feel ashamed(惭愧的)for组句成文_参考范文:an unforgettable memory i have an unforgettable memory. i want to share it with all of you. one day, i played basketball for a long time and i felt very tired. then l went back home by bus. i got a seat on the bus. after a while, an old man got on the bus and he stood by my side. i didnt want to give my seat to him because i was too tired. so i pretended to sleep. actually i couldnt fall asleep because i felt ashamed for not giving my seat to the old man. now i still cant forget the memory. i havent done things like that again since then.【一展身手】 听完同学们不同的记忆之后。你想跟大家分享自己的一段美好的记忆。要求: 80词左右。写作本篇作文可能用到的词江、短语: wonderful, take care of, worm (虫), let it go。a wonderful memory2014-2015学年上学期八年级配合牛津版深圳专版第24期测试题答案第24期n2版 keys: (one possible version 选择题除外)语法运用7. she will go shopping every day unless she has no money.8. if you light a candle, it burns.9. my mother won t let me surf the internet unless i finish my homework.10. it will be cheaper if we take a bus.iii. 11. i wont go to sleep unless i finish my homework.12. if you dont receive the invitation, you cant go to the meeting.13. unless you can remember the passage, you must read it again and again.14. you wont live here if you don t have enough money.15. unless you finish your work, the boss wont let you go.16. he wont stop playing computer games if he is not tired.iv. 17-21 aabcd短语收藏夹1. at the beginning 2. switch off 3. took out 4. get a toothache 5. poured out of 6. stay relaxed 7. slow down 8. in the middle of 9. put; into第24期n3版 keys: (one possible version 选择题除外)随堂练section ai. 1-5 e d c g a 6-10 f b j h iii. 11. is; takes 12. sleep; feel 13. work; are 14. return; won t be 15. wont let; tidyiii. 16. if there is no water, fish die.17. my baby sister never cries unless she is hungry.18. i run every morning unless bad weather stops me.19. if you arent careful, you will make a mistake.20. if im free this sunday, i will visit you.section bi. 1 . used to eat 2. the best day of my life 3. feel bad about 4. give me an example5. glad to meet youii. 6. a 7. an 8. and 9. better 10. because 11 . creating 12. in 13. our 14. problems 15. havesection c1. take out 2. making a funny noise 3. poured out of the machine 4. at the beginning5. in the middle 6. put; into your wallet 7. some notes 8. stop to have a rest 9. in the end 10. a special memorysection di. 1. a balanced diet 2. exercise your brain 3. live a healthy life 4. lots of 5. slow downii. 6
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