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1、Period 3GrammarTeaching aims1 Students will be able to recognize the infinitives and know the exact meanings of them.2 Students will be able to use these structures correctly.Teaching proceduresRevisio nAsk several students to retell Martys story.Show Martys mini biography on the PowerPoint.My mini
2、biographyNameMarty FieldingStatusHigh school studentHealthDeveloped a muscle disease at the age of 10， veryweak，cannotdo things likenormal peopleInterests andHobbiesEnjoying writing and computer programmingGoing to the movies and football matches with friendsSpending a lot of time with my pets two r
3、abbitsfish and a tortoise，a parrot， a tank full ofAmbitionMottoTo work for a firm that develops computer softwareLive one day at a timeDiscovering useful structures1基本概念不定式是动词的一种非谓语形式，没有人称和数的变化，而且不能单独用作谓语，但仍旧有动词的特点，即可有自己的宾语和状语，构成不定式短语，使用频率较高。是一个考试经常考查的语法点。2基本形式主动形式被动形式一般式to doto be done完成式to have do
4、neto have been done进行式to be doing/完成进行式to have been doing/否定形式not to donot to be done疑问词不定式wh to dowh to be done复合结构sb.to do/for sb.to do/3. 句法功能不定式具有名词、形容词、副词的特征，在句中可以充当主语、表语、宾语、定语、状语和补足语，还可以有自己的逻辑主语，即for sb.to do sth.。It is good to_help_others.(subject)It is my ambition to_make_sure_that_the_disab
5、led_people_in_our_neighbourhood_have_access_to_all_public_buildings.(subject)My ambition is_to_work_in the computer industry when I grow up.(predicative)I dont have time to_sit_around feeling sorry for myself.(attributive)I am the only student in my class to_have_a_pet_snake.(attributive)A big compa
6、ny has decided to_buy_it_from_me.(object)My fellow students have begun to_accept_me_for_who_I_am.(object)I have had to work hard_to_live_a_normal_life.(adverbial)Some days I am too tired to_get_out_of_bed.(adverbial)We must call on local government_to_give_financial_assistance_to_disabled_people. (o
7、bjectcomplement)4不定式的时态与语态根据需要，不定式可以有一般式(todo) ，完成式 (to进行式 (to be doing)等时态形式以及被动形式to be donehave done) ，完成进行式和 to have been done(to 。have been doing)，He didnt allow us to go home early.他不允许我们早回家。He seemed to have seen the film.他好像看过这部电影。She is said to have been living in the city for six years.据说她住
8、在该城市六年了。The boy pretended to be reading when his mother came in.当他母亲进来的时候，小男孩假装在读书。He is said to have studied abroad a few years ago.据说他几年前在国外学习过。The book is said to have been translated into many languages.据说此书已被译成了多种语言。1 The following verbs are usually followed by the infinitive.afford ， agree ，ap
9、pear ，arrange ，ask ，attempt ，care ， choose， claim ，come，consent ， dare ，decide ，demand，deserve ，determine ，elect ，endeavor ，expect ，fail，g et ，guarantee ，hate ，help ，hesitate，hope，hurry ，intend ，learn ，long ，manage，mean，need，offer，plan ，prepare ，pretend ，promise ，refuse ，say ，seem， tend ，threaten， w
10、ant ，wishFor example ：I cantaffordto_go to the pub.He agreed to_practice_more.You shouldlearnto_express_yourself.They managed_to_fix_the_problem.2 Explanation of the gerund and the infinitiveSome words can be followed by either the infinitive or the ing form.Please pay attentionwhen th ere is no dif
11、ference in meaning and when there is difference.(1)The gerund and the infinitive (no difference in meaning)We use the gerund or the infinitive after the following verbs：He began talking.b eginHe began to talk.They continue smoking.continueThey continue to smoke.Do you hate working on Saturdays？hate？
12、Do you hate to work on SaturdaysI like swimming.likeI like to swim.She loves painting.loveShe loves to paint.Pat prefers walking home.preferPat prefers to walk home.They start singing.startThey start to sing.two possible structures after these verbs.Gerund：verb ingInfinitive： verb person to infiniti
13、veThey advise walking_to town.adviseThey advise us_to_walk to town.They do not allow smoking here.allowThey do not allow_us_to_smoke_here.They encourage_doing_the test.encourageThey encourage us_to_do_the test.They do not permit smoking here.permitThey do not permit us_to_smoke here.We use the follo
14、wing structures after the word recommend：They recommend walking_to town.recommendThey recommend that_we_(should)_walk_to_town.(2)Some verbs or verb phrases have different meanings when used with the gerund or theinfinitive.GERUNDINFINITIVEHell never forget spending_so muchDont forget to_spend money
15、on themoney on his first computer.他永远forgettickets.不会忘记在第一台电脑上花费了这么多不要忘记用钱去买票。钱。go onGo on reading the text.Go on to_read_the text.继续读这篇文章。 ( 继续做同一件事 )继续读这篇文章。 ( 继续做另一件事 )You have forgotten your homeworkI meant to_phone your mother， but mymeanagain.That means phoning_yourmother.mobile didnt work.你又忘
16、记做家庭作业了， 这意味着我要打我本打算打电话给你妈妈，但是我的手机坏电话给你妈妈。了。I remember switching_off the lightsRemember to_switch_off the lights whenrememberwhen I went on holiday.you go on holiday.我记得我去度假时把灯都关掉了。当你去度假时，记得把灯关掉。stopStop reading_the text.Stop to_read_the text.停止 篇文章。停下来 篇文章。Why dont you try running_after theed to_ru
17、n after the dog，but I .tryI tridog？我竭尽全力跟着狗跑 ，但是你 什么不 跟着狗跑呢？DrillingAsk students to do Exercise 2 on Page 5and check with their partners then check together.Keys：to have kept you waiting ；to have forgotten；to have finished；Ask students to do Exercise 3 and share their past experience in a group.Keys
18、：to have spent；To free；to see ；to treat； to help pass；to abolishUsing the infinitiveAsk students to translate the following sentences into English and pay attention to the use of the infinitive.1我忘了 你去社区服 中心了。2在 机器之前关掉 源是很重要的。3我不知道哪儿能找到 种 扣。4幸运的是，我 没有更多的活儿要做。5海 很高 到 中国20 多个省、市。6她事 有成， 在最大的愿望就是 婚生子。S
19、uggested answers ：1 I forgot to ask you to go to the community service center.2 Its very important to turn off the electricity before you check the machine.3 I dont know where to find such a kind of button.4 Luckily， we dont have much more work to do.5 Helen is very pleased to have travelled in more than 20 provinces and cities in China.6 She has been very successful in her work ，and now her greatest wish is to get married and have some children.Homework