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1、Unit one,Grammar and usage,I.The present tenseII.Present continuous tenseIII.The present perfect tenseIV.The present perfect continuous tense,I the present tense 1 表示客观事实或普通真理.(不受时态限制)The geography teacher told us the earth moves around the sun.地理老师告诉我们地球绕着太阳转。Japan lies to the east of China.日本位于中国的
2、东方。The sun rises in the east and sets in the west.太阳东升西落。,2 表示现在经常或反复发生的动作或存在的状态,常和often,always,usually,sometimes,everyday,once a week 等表示频率的时间状语连用.He takes a walk after supper every day.他每天晚饭后散步。My mother works at the same company as my father.我母亲和父亲在同一家公司工作。We always care for each other and help e
3、ach other.我们总是相互关心相互帮助。,3 表示主语的特征、性格、能力等。Mr.Smith hates fish and never eats any.斯密斯先生讨厌鱼而且从来不吃。Mary speaks both English and French very well.玛丽英语和法语都说的很好。,4 表示安排或计划好的肯定会出现的动作或状态。The plane takes off at 10:00 a.m.飞机上午10点起飞。Tomorrow is Wednesday.明天是星期三。,5 在时间、条件状语从句中用一般现在时表示将来的动作。We will have to put of
4、f the sports meeting if it rains tomorrow.如果明天下雨我们将不得不推迟会议。I cant leave unless my boss agrees.除非老板同意，否则我不能走。Notes:if 引导的条件状语从句中可以用shall 或will 表示意愿，但不表示时态。If you will accept my invitation and come to our party,my family will be pleased.,II.Present continuous tense1 表示说话时正在进行的动作。-what are you doing?-I
5、 am writing a letter.Its raining heavily now,so we must stay inside.,The water is boiling.,The sun is rising.The man is walking.,2 表示现阶段一直在进行的动作。Jane is studying law while her sister is doing physics.简在学习法律而她的姐姐在学习物理。He is teaching English and learning Chinese.他正在一边教英语一边学中文。,3 表示按计划近期内即将发生的动作。I am m
6、eeting Mr.Wang tonight.我今晚要去见王先生。I am going to Qingdao for the summer holiday this year.我计划今年去青岛过暑假。The plane is leaving for London soon.飞机即将飞往伦敦。,4 与always often 等频度副词连用表示经常反复的行为或某种感情色彩。The girl is always talking loud in public.那个女孩总爱当众大声喧哗。She is often borrowing money and forgetting to pay me back
7、.她经常借钱却忘记还。She is constantly complaining about her fate.她不停地抱怨自己的命运不好。,Notes:以下四类动词不宜用现在进行时。A 表示心理状态、情感的动词 Like,love,hate,care,remember,believe,want,mind,wish,agree,mean,needB 表示存在状态的动词 appear,exist,lie,remain,seem,belong to,depend onC 表示瞬间动作的动词 allow,accept,permit,promise,admit,completeD 表示感官的动词 se
8、e,hear,notice,smell,sound,taste,look,III.The present perfect tense1 表示反复发生的经历 He has hosted the show eight times.他已经连续八次主持表演。Billy Crystal has been in many films and television shows.贝利克克里斯托已经出演过多部电影和电视剧。We have been to the Great Wall many times.我们已去过长城多次。,2 表示动作发生在过去，但对现在仍留下某种后果和影响。He has paid his
9、income tax.他已经交了个人所得税。Doctors have found that people who laugh a lot live longer!医生们已经发现经常大笑的人长寿。,3 表示动作发生在过去但持续到现在。My mother has been ill for three days.我妈妈已经生病3天。Most of us have studied English for 5 years.我们大部分人已经学了5年英语了。,4 下列句型中常用现在完成时。It is(has been)+一段时间 since+从句 This(that/It)is the first(seco
10、nd)time that+完成时 This(That/It)is the best/finest/most interesting.+that+完成时 Its/It has been 3 years since they got married.Its the first time that I have been to the Great Wall.This is the most interesting film that I have seen.,Notes:在时间或条件状语从句中，现在完成时可以代替一般将来时。If you have done the experiment,youll
11、understand the theory better.如果你做完试验，你会更好地理解这个理论的。Dont get off the bus until it has stopped.车停稳之前，别忙着下车。,Notes:注意区分一般过去时与现在完成时 时间上有差异：凡有具体的过去时间，均用过去时态，不能用完成上，如：ago,last year,just now,the other day 等。结果上有差异：现在完成时强调的是对“现在”的影响和结果，动作到现在刚完成或还在继续；一般过去时强调的动作发生在过去，和现在没有关系。,IV.the present perfect continuous
12、tense 表示从过去某一时间开始一直延续到现在的动作，这个动作可能刚刚结束，也可能还要继续下去。Chinese have been making paper for more than 2000 years.中国造纸的历史已有2000多年了。Doctors have been researching that question for many years.多年来，医生们一直在研究这个问题。The children have bee watching TV all morning.孩子们一上午一直在看电视。,Answers part A:1.am 8 has been planning2 h
13、ave been writing 9 have designed3 am looking 10 are printing4 is 11 are going5 have been imagining 12 is6 is 13 hope7 is making 14 opens,I _ at the comedy Club tonight.,am performing,2 I _ my jokes in front of the mirror for the last three hours.,have been practising,3 My family _ to watch my show.,
14、is coming,4 I _ nervous about the show.,am,高考链接Although he has lived with us for years,he _ us much impression.A hadnt left B didnt leave C doesnt leave D hasnt left,In such dry weather,the flowers will have to be watered if they _.（2001年上海）A have survive B are to survive C would survive D will surv
15、ive,(NMET 2003年)All morning as she waited for the medical report from the doctor,her nervousness_.A has grown B is growing C grew D had grown,_ David and Vicky _ married?For about three years.(NMET 2003年北京)A How long were;being B How long have;got C How long have;been D How long did;get,(NMET 2002年春
16、季北京)John and I _ friends for eight years.We first got to know each other at a Christmas party.But we _ each other a couple of times before that.A had been;have seen B have been;have seen C had been;had seen D have been;had seen,Translate the following sentences:,火车将在上午9：00点钟开。The train starts at nin
17、e in the morning.那个小孩总是爱惹麻烦。That boy is always making trouble.我做完家庭作业就去你家。Ill go to your home when I have finished my homework.你在逛街的时候别忘了交通规则。When you are going around the street,dont forget the traffic rules.,用所给动词的一般现在时，现在完成时，现在进行时或现在完成进行时的形式填充。,-How long_ David and Vicky _ _(marry)?-For about thr
18、ee years.2.Come and see me whenever it _(be)convenient to you.3.The water will be further polluted unless some measures _ _(take).,have,been married,is,are taken,6.Because the shop_ _(close)down,all the T-shirts are sold at half price.7.Every possible means _ _ _(try)to prevent the air pollution,but
19、 the sky is still not clear.8.-Whats that terrible noise?-The neighbors _ _(prepare)for a party.9.The Smiths moved to settle in Canada in 2003,so they_ _ _(live)there for 3 years.,is closing,has been tried,are preparing,have been living,10.The number of deaths from heart disease will be reduced grea
20、tly if people _ _(persuade)to eat more fruit and vegetables.11.You _ always _(watch)television.Why not do something more active?12.The crazy fans _ _ _(wait)patiently for two hours and they will wait till the movie star arrives.13.Dont stop your car here.Look at the sign which _(read)“No Parking!”,a
21、re persuaded,are,watching,have been waiting,reads,Language points:,1.I have already found one enthusiastic actor who is super.我已经找到了一个非常优秀的热心演员。enthusiastic:adj.热情的 You dont seem very enthusiastic about the party-dont you want to go tonight?enthusiasm noun U 热情 One of the good things about teaching
22、young children is their enthusiasm.After the accident he lost his enthusiasm for the sport.,2 Writing is tough work,but I hope it will all be worthwhile.写作是很辛苦的工作，但我希望它会是值得的。tough:adj.艰苦的,艰难的They will be a tough team to beat.The company is going through a tough time at the moment.Many homeless peopl
23、e are facing a tough winter.,worthwhile:adj.值得的She considers teaching a worthwhile career.The time and expense involved in keeping up to date with all the changes has been worthwhile.worth adj.值得的(1)be worth sth I think this matter is worth our attention.The National Museum is worth a visit.(2)be worth having/doing sth Theres nothing worth reading in this newspaper.The film is worth reading again.,Bye-bye!,Bye-bye!,
