Unit 1 第3课时 Grammar(教师版).docx
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1、Unit 1 Past and present第3课时Grammar1. use the present perfect tense to make positive statements;2. use the present perfect tense to make negative statements;3. use the present perfect tense to ask and answer questions;4. form the past participles of regular and irregular verbs. 经典短语默写1.finish their h
2、omework完成他们的家庭作业2.visit China参观中国3.repair over ten bicycles修理超过十辆自行车4.since Monday自从周一以来5.see each other互相见面6.for years长达数年e back回来8.teach us a lot about the history of China教我们很多有关中国的历史9.see some films看一些电影10.last Saturday上周六11.about the changes in Beijing关于在北京的变化12.over the past century在上个世纪期间13.l
3、earn more about Beijings past and present了解更多北京的过去和现在14.hear about听说15.plan to see it again打算再看一遍重难句型过关1.这本书我已经读过许多遍了。I have already read this book many times. 2.他们已经完成了家庭作业。They have finished their homework already. 3.约翰从未到访过中国John has never visited China.。4.自星期一以来李先生已经修理了10多辆自行车。Mr Li has repaired
4、 over ten bicycles since Monday. 5.我父母还没有回来。My parents havent come back yet. 6.哦,我想我听说过这部电影Oh, I think I have heard about the film. 。7.你打算再看一遍吗?Do you plan to see it again? 现在完成时基本结构:基本结构:主语+have/has+动词的过去分词四种基本句型 :肯定句:主语+have/has+动词的过去分词+宾语.Eg:1.He has already had his lunch. 2.I have just finished
5、my homework.否定句:主语+have/has+not+动词的过去分词)+宾语.Eg:1.I have not seen the movie yet. 2. She hasnt eaten it.一般疑问句:Have/Has+主语+动词的过去分词+宾语.Eg:1.Have you finished the work? 2.Has she arrived here? 3.Have they eaten supper?特殊疑问句:特殊疑问词或词组+一般疑问句(have/has+主语+过去分词(V-ed)+其他)Eg:1.Where have you been? 你去哪儿了?2.How ma
6、ny times have you been to Beijing? 你到过北京多少次?3.Who has taken my book? 谁拿走了我的书?4.Why have you not written to me? 你为什么没给我写信?5.When have you finished your work? 你什么时候完成工作的?现在完成时用法最简单的理解 :过去+现在,合二为一才是现完。1. 现在完成时用来表示过去发生或已经完成的动作对现在造成影响或后果。可以理解为:I have already posted the photo. 我已经把照片寄走了。强调post对现在的影响照片不在这里
7、。2. 现在完成时可以用来表示发生在过去某一时刻的、持续到现在的动作(用行为动词表示)或状态(be动词表示),常与for(+时间段),since(+时间点或过去时的句子)连用,谓语动词必须是延续性动词。如:He has lived here since 1978.自从1978年以来,他一直住在这儿。(动作起始于1978年,一直住到现在,可能还要继续住下去。)三、规则动词过去式的变化方法情况构成方法例词一般情况加-edwashwashed helphelped以不发音的字母e结尾加-dhopehoped likeliked以辅音字母 + y结尾变y为i,再加-edcarrycarried stu
8、dystudied结尾只有一个辅音字母的重读闭音节双写末尾的辅音字母,再加-edstopstopped planplanned四、不规则动词的变化有些规律,更多靠硬记,平时多注意积累。不规则动词变化规律表见文末附录(含过去分词)一、单项选择1-How clean the bedroom is!-Yes, I am sure that someone _ it.AcleansBcleanedChas cleanedDis cleaning【答案】C【详解】句意:卧室多干净啊!是的,我肯定有人把它打扫过了。考查动词时态辨析题。根据句意和语境,可知对句需用现在完成时态;因为someone是三单人称,
9、需借助has+过去分词构成完成时,故选C。2-When _ Jessie _ to New York?-Yesterday.Adoes, getBdid, getChas, gotDis, getting【答案】B【详解】句意:杰西什么时候到纽约?昨天。考查动词时态题。根据答语yesterday,可知是一般过去时,结合句意结构,可知选B。3I havent heard of my best friend _. I dont know what has happened to her.AalreadyBeverCrecentlyDnever【答案】C【详解】句意:我最近没有听说过我最好的朋友。我
10、不知道她出了什么事。考查副词辨析题。A. already已经;B. ever曾经;C. recently近来;D. never从不,表否定。根据句意和语境,可知ABD三个选项意思都与句意不符,故选C。4-Hi. I _ you for a long time.-I _ in Beijing. Ive just come back.Adidnt see, amBhavent seen, shall beCdidnt see, will beDhavent seen, was【答案】D【详解】句意:嗨,我好久没见到你了。我在北京。我刚回来。考查动词时态辨析题。前一句中的for a long tim
11、e很久,用于现在完成时,I是第一人称,需借助have+not+过去分词构成完成时的否定式,可排除AC两项。后一句根据Ive just come back.,可知前面用一般过去时,I是单数人称,需用was。联系语境,故选D。5-Is it the most wonderful football game you have _ watched?-Yes, I have _ watched such a wonderful game before.Aever; neverByet; everCalready; yetDever; yet【答案】A【详解】句意:这是你看过的最精彩的足球赛吗?是的,我从
12、来没有看过这么精彩的比赛。考查副词辨析题。ever曾经;never从不/从没有,表否定;yet仍然,还,用于否定句和完成时,放在句尾;already已经,用于现在完成时。根据句意结构和语境,可知选A。6 my glasses?Yes, I saw them on your bed a minute ago.ADo you seeBHad you seeCWould you seeDHave you seen【答案】D【详解】句意:-你看过我的眼镜吗?-是的,我一分钟前在你床上看到过他们。A. Do you see一般现在时;B. Had you seen过去完成时;C. Would you s
13、ee过去将来时;D. Have you seen现在完成时。过去的动作对现在的影响,用现在完成时,结合句意和语境可知现在完成时,选D。7How long David and Vicky married?For about four years.Awere; beingBhave; gotChave; beenDdid; get【答案】C【详解】句意:-戴维和维姬结婚多久了?-大约四年。How long多久,多长时间,后面的动词用延续性动词,根据回答For about four years(for+时间段,一般用现在完成时)可知现在完成时;get married结婚,非延续动词,不能和时间段连用
14、,排除B和D;be married结婚,延续性动词,结合句意和语境可知选C。点睛:1.marry sb.、get married 和be married都有结婚的意思,marry sb.和get married终止性动词(瞬间动词),不能和时间段连用,也不能用于how long开头的特殊疑问句中,be married是延续性动,可以和时间段连用,也可以用于how long开头的特殊疑问句中;2.和结婚,不能说marry with sb.,marry是及物动词,只能说marry sb.;3. get married 和be married意思是结婚,娶,嫁,如果说“和结婚,嫁给,娶了”要加介词t
15、o;例如,She got married to a man of wealth. 她嫁给了一个有钱人。8I wonder why Jenny us recently. We should have heard from her by now.Ahasnt writtenBdoesnt writeCwont writeDhadnt written【答案】A【详解】句意:我想知道为什么詹妮最近没有给我们写信。我们现在应该收到她的信了。A. hasnt written现在完成时;B. doesnt write一般现在时;C. wont write一般将来时;D. hadnt written过去完成时
16、。recently:近来,最近,近日,用于现在完成时;结合句意和语境可知选A。9The coffee is wonderful! It doesnt taste like anything I _ before.Awas havingBhaveChave ever hadDhad ever had【答案】C【详解】句意:-这咖啡棒极了!它尝起来不像我以前吃过的任何东西。A. was having过去进行时;B. have一般现在时;C. have ever had现在完成时;D. had ever had过去完成时。before以前,此句时态用现在完成时;结合句意和语境可知选C。10Danny
17、 _ hard for long to realize his dream and now he is popular.AworksBis workingChas workedDworked【答案】C【详解】试题分析:句意:为了实现他的梦想,很久以来他一直努力工作,现在他很受欢迎了。结合语境可知本句描述的是一直持续到现在的动作,故用现在完成时态。选C。考点:考查时态辨析11I have got a headache.No wonder. You _ in front of that computer too long.AworkBare workingChave been workingDwo
18、rked【答案】C【详解】句意:-我头疼。-并不奇怪。你在那台电脑前工作太久了。A. work一般现在时;B. are working现在进行时;C. have been working现在进行时;D. worked一般过去式。过去的动作对现在造成的影响用现在完成时,“你坐在电脑前工作”这一动作从过去开始,对现在造成的影响是“我头痛”,它仍在继续,可知用现在完成时或现在完成进行时;结合句意和语境可知选C。点睛:现在完成进行时表示动作从某一时间开始,一直持续到现在,或者刚刚终止,或者可能仍然要继续下去 (与since,for连用时,要用连续性动词) 。 其构成为:主语+助动词(have/has)
19、+been+动词的现在分词+其他成分。12Have you known Dr. Jackson for a long time?Yes, since she _ the Chinese Society.Ahas joinedBjoinsChad joinedDjoined【答案】D【详解】句意:-你认识杰克逊医生很久了吗?-是的,自从她加入了中国社会。A. has joined现在完成时;B. joins一般现在时;C. had joined过去完成时;D. joined一般过去式。主句是现在完成时,since后面从句用过去式,结合句意和语境可知选D。13So far this year we
20、 _ a fall in house prices by between 5 and 10 percent.AsawBseeChad seenDhave seen【答案】D【详解】句意:到目前为止,今年我们的房价下跌了5到10%。A. saw一般过去式;B. see一般现在时;C. had seen过去完成时;D. have seen现在完成时。So far:到目前为止,此句时态用现在完成时;结合句意和语境可知选D。14Up to now, the program _ thousands of children who would otherwise have died.Awould save
21、BsavesChad savedDhas saved【答案】D【详解】句意:,这项计划已经挽救了成千上万的儿童,否则他们就会死去。A. would save一般将来时;B. saves一般现在时;C. had saved过去完成时;D. has saved现在完成时。up to now:到目前为止,用于现在完成时;结合句意和语境可知选D。15He told me he would be here at 2 oclock. But he _ yet.Adidnt arriveBisnt arrivingChasnt arrivedDwont arrive【答案】C【详解】句意:他告诉我他两点钟到
22、。但他还没到。考查时态。didnt arrive一般过去时;isnt arriving现在进行时;hasnt arrived现在完成时;wont arrive一般将来时。根据“yet”和语境可知,他告诉我他两点到,可推测此处是他还没到,时态为现在完成时,主语为he,第三人称单数,谓语用“has+过去分词”的结构,arrived“到达”为动词过去分词。故选C。16I _ the book yet.Ahavent readBhadnt readCdont readDam not reading【答案】A【详解】句意:我还没看书。考查时态。根据现在完成时标志词“yet”可知,该句为现在完成时,否定结
23、构为“havent/hasnt + 过去分词”,故选A。17Have the school _ the right person to attend the meeting yet?AchooseBchoosenCchoseDchosen【答案】D【详解】句意:学校有没有选择合适的人来参加会议?考查过去分词的变化规则。choose选择,动词原形;choosen单词拼写错误;chose选择,过去式;chosen选择,过去分词。根据“yet”可知,时态为现在完成时;根据“Have”可知,后面接动词的过去分词;choose的过去分词形式为chosen。故选D。18The writer _ two b
24、ooks recently.AwriteBwroteChas writtenDwritten【答案】C【详解】句意:这位作家最近写了两本书。考查现在完成时。根据时间状语“recently”可知,句子的时态是现在完成时,其谓语动词构成是have/has done。故选C。19Thanks to the use of 5G technology, ways of communication _ a lot.AimprovesBhas improvedChave improvedDimproved【答案】C【详解】句意:由于使用了5G技术,通信方式有了很大改善。考查现在完成时。根据“Thanks t
25、o the use of 5G technology, ways of communicationa lot.”可知,由于5G技术的使用,通信方式已有很大改善,此处用现在完成时have/has done,主语ways of communication是复数,故选C。20What a nice bike! How long _ you _ it?Just five weeks.Ahave; boughtBdid; buyCdo; haveDhave; had【答案】D【详解】句意:多好的一辆自行车啊!你买下它多久了?只有5周。 考查现在完成时。根据第一句的特殊疑问词How long可知,动词需要
26、用现在完成时,因此先排除选项B,C; 其次How long后的动词要用延续性的,而buy是瞬间动词,不符合要求。因此只有D是符合题意的。故选D。21Not only he but also I _ the movie before.AseeBseesChave seenDhas seen【答案】C【详解】句意:不但他而且我之前已经看过这部电影。考查动词时态。根据语境和before可知,强调之前已经看过,应用现在完成时,A和B错误;因为not only . but also使用就近一致原则,因此谓语动词和I一致,要用have,故选C。 22_ your uncle _ the Great Wal
27、l?Yes, he has.ADid; visitBHas; visitedCDoes; visitDWill; visit【答案】B【详解】句意:你叔叔参观长城了吗?是的,他参观过了。考查现在完成时的一般疑问句。根据回答“Yes, he has.”可知,此处也应用Has提问,为现在完成时的一般疑问句。故选B。23Mr. Li _ four books, and all of them are bestsellers.Ahas writtenBwill writeCis writingDwrites【答案】A【详解】句意:李先生已经写了四本书,而且它们中所有的都是畅销书。考查动词时态。根据“a
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