山东省青岛市城阳区第七中学初中英语《Unit 9 Back to the future》学案2（无答案） 人教新目标版.doc

unit9 back to the future导学二学习目标1. 本课时四会单词2. 学会用if引导的真实的条件状语从句表达生活中的事例3. 阅读训练自主学习课前导学引导条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。如： if you ask him，he will help you如果你请他帮忙，他会帮你的。 if you fail in the exam，you will let him down如果你考试不及格，你会让他失望的。 if you have finished the homework， you can go home如果你作业做完了就可以回家了。 另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。如： if i were you，i would invite him to the party如果我是你，我会邀请他参加聚会。 i would have arrived much earlier if i had not been caught in the traffic要不是交通堵塞，我本会来得早一些。另外你还要注意if 条件句的时态搭配1 if从句用一般现在时，主句用一般将来时 if he runs hell get there in time. 如果他用跑的，他就会及时赶到那儿。the cat will scratch you if you pull her tail. 如果你拉猫的尾巴，它就会抓你。2 if从句用一般现在时，主句用may/might/canif the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。if it stops snowing we can go out. 如果雪停了，我们就可以出去。3 if从句用一般现在时，主句用must/shouldif you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包。4 if从句用一般现在时，主句用一般现在时if you heat ice it turns to water. (也可用will turn)如果把冰加热，它就会化成水。5 if从句用现在进行时，主句用一般将来时if you are looking for peter youll find him upstairs. 如果你是在找彼得，上楼就会找到他。6 if从句用现在完成时，主句用一般将来时if you have finished dinner ill ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账注意 ：学习 if 引导的条件状语从句的用法,现在总结一下: if 条件句不一般,几个要点记心间; 条件句,放在前,逗号要放句中间。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。在 if 引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。如： we can walk there if we cant find a bus . if it rains tomorrow ,we will not go to the zoo. what will you do if you find a panda in danger.如果 if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。如： if bears are in danger ,they attack people.在 if 引导的条件状语从句中，if 和条件句位置灵活，可直接放在主句后面，若 if 条件句放句首， 从句后面要加逗号，和主句隔开。还要注意前后时态一致原则请大家思考if引导的条件状语从句是否可以与with或without进行转换，请举例说明reading practicediscuss: love is for example:love is giving someone your last chocolate/forgiveness. etc.vocabularyhave a crush on stay away frombe attached to continuing until nowinterrupt f eel a strong but temporary attraction to someoneavoid recognize or accept as truestill like someone and want to have a relationship with him/hernevertheless have confidence or believe in someoneadmit in spite of what was just said; howevertrust stop someone from speaking by suddenly saying something post-readingtask 1 翻译句子并用happen造句, 请猜测this在此指代什么but this has happened before, and it was just a “crush”.task 2 请找出课文中提到了几种时态，几个我们学过的句型，几种从句 并在课文中画出task 3 在文中找出.is one thing, and .is another的句子并造句课后练习choose the correct responses. 1. a: what if i get in shape this summer? b: _ you might be able to come rock climbing with me. you wont be able to come rock climbing with me. 2. a: what will happen if i stop exercising? b: _ well, you wont gain weight. well, you might gain weight. 3. a: what if i get a better job? b: _ you wont be able to buy new clothes. youll be able to buy some new clothes. 4. a: what will happen if i dont get a summer job? b: _ you may be able to find a roommate when school starts. youll probably have to find a roommate when school starts. 6 verb pairs a which words go with which verbs? complete the chart. a cold married dieting relaxed energetic touch exercising weightfeelgetlosequitenergetic_ b write sentences with if. use some of the words in part a. 1. if i feel energetic, i might go for a walk. 2. _ 3. _ 4. _ 5. _ 6. _ 7 complete these sentences with your own information. add a comma where necessary. grammar note: conditional sentences with if clauses the if clause can come before or after the main clause. before the main clause, add a comma. if i move to a cheaper apartment, ill be able to buy a car. after the main clause, do not add a comma. ill be able to buy a car if l move to a cheaper apartment. 1. if i go shopping on saturday, i might spend too much money. 2. ill feel healthier _ 3. if i get more exercise _ 4. if i dont get good grades in school _ 5. i might get more sleep _ 6. ill be happy _ 8 nouns and adjectives a complete the chart with another form of the word given.nounadjectivenounadjectiveenergy_medical_environmentalsuccess_health_ b complete the sentences. use words in part a. 1. there have been lots of medical advances in the past half century, but there is still no cure for the common cold. 2. there are a lot of _ problems in my country. theres too much air pollution and the rivers are dirty. 3. my _ is not as good as it used to be. so ive decided to eat better food and go swimming every day. 4. my party was a great _ . i think i might have another one soon! 5. if i start exercising more often, i might have more _. 9 rewrite these sentences. find another way to say each sentence using the words given. 1. if i stop eating rich food, i may be able to lose weight. (diet) if i go on a diet, i may be able to lose weight. 2. in the future, not many people will use cash to buy things. (few) _ 3. today, people use bicycles less often than before. (used to) _ 4. if i get a better job, i can buy an apartment. (be able to) _ 5. theres going to be a big new shopping center downtown. (mall) _ 10 write three paragraphs about yourself. in the first paragraph, describe something about your past. in the second paragraph, write about your life now. in the third paragraph, write about your future. i used to live in a very quiet place . now, i live in a big city. my job is. if my english improves, i may be able to get a job in an international company . next year . i might . _language summarynounsadvantage automobile catalog consequenceconstruction site cure disadvantage housingleader ocean liner postal system railroadreality game space flights taxadjectivesaudio commercial high-paying multiplexun