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1、动词时态【复习目标】 掌握初中阶段各时态的构成及用法。【导学过程】一、 一般现在时1.概念:经常、反复发生的动作或行为及现在的某种状况。 2.时间状语: Always, usually, often, sometimes, every week (day, year, month), once a week(day, year, month), on Sundays, 3.基本结构:动词 原形 (如主语为第三人称单数,动词上要改为第三人称单数形式)如: He watches TV on Sundays.4.否定形式:主语+am/is/are +not+其他; 此时态的谓语动词若为行为动词,则在
2、其前加dont, 如主语为第三人称单数,则用doesnt,同时还原行为动词。We dont have noodles for lunch,but he doesnt have dumplings.5.一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does, 同时,还原行为动词。Does it seldom snow in South China?二、 一般过去时1.概念:过去某个时间里发生的动作或状态;过去习惯性、经常性动作、行为。 2.时间状语:ago, yesterday, the day before yesterday, last week, last(y
3、ear, night, month), in 1989, just now, at the age of 5, one day, long long ago, once upon a time, etc. 3.基本结构:be动词、行为动词的过去式4.否定形式:主语+was/were +not+其他;在行为动词前加didnt,同时还原行为动词。 如:I didnt know you were so busy.5.一般疑问句:was或were放于句首;用助动词do的过去式did 提问,同时还原行为动词。 Did he come to school yesterday?三、现在进行时1.概念:表示现
4、阶段或说话时正在进行的动作及行为。 2.时间状语:Now, at this time, days, etc. Look,listen3.基本结构:主语+be +doing +其他4.否定形式:主语+be +not +doing+其他5.一般疑问句:把be动词放于句首。 How are you feeling today? He is doing well in his lessons.6.下列动词come, go, arrive, leave, start, begin, return等现在进行时可以表示将来。例如:Im leaving tomorrow. 明天我要走了。四、过去进行时1.概念
5、:表示过去某段时间或某一时刻正在发生或进行的行为或动作。 2.时间状语:at this time yesterday, at that time或以when引导的谓语动词是一般过去时的时间状语等。 3.基本结构 主语+was/were +doing +其他4.否定形式:主语+was/were + not +doing+其他5.一般疑问句:把was或were放于句首。(第一个字母大写) 五 现在完成时1.概念:过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态。 2.时间状语:yet,already,just,never,ever,so far,by now
6、,since+时间点,for+时间段,recently, lately, in the past few years, etc. 3.基本结构:主语+have/has +p.p(过去分词)+其他 4.否定形式:主语+have/has + not +p.p(过去分词)+其他 5.一般疑问句:have或has提前 六、过去完成时1.概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”。 2.时间状语:Before, by the end of last year (term, month), etc. 3.基本结构:主语+had + p.p(过去分词
7、)+其他4.否定形式:主语+had + not +p.p(过去分词)+其他 5.一般疑问句:had放于句首。 例句:As soon as we got to the station, the train had left. By the end of last month. We had reviewed four books七、一般将来时1.概念:表示将要发生的动作或存在的状态及打算、计划或准备做某事。 2.时间状语:Tomorrow, next day(week, month, year),soon, in a few minutes, by,the day after tomorrow,
8、 etc. 3.基本结构:主语+am/is/are +going to + do+其他;主语+will/shall + do+其他 4.否定形式:主语+am/is/are not going to do ;主语+will/shall not do+其他 5.一般疑问句:be放于句首;will/shall提到句首。 八、过去将来时1.概念:立足于过去某一时刻,从过去看将来,常用于宾语从句中。 2.时间状语:The next day (morning, year),the following month(week),etc. 3.基本结构:主语+was/were +going to + do+其他
9、;主语+would/should + do+其他4.否定形式:主语+was/were/not + going to + do; 主语+would/should + not + do. 5.一般疑问句:was或were放于句首;would/should 提到句首。 九、现在完成进行时1.概念:表示从过去某一时间开始一直延续到现在的动作。这一动作可能刚刚开始,也可能仍在继续,并可能延续到将来。2.基本结构:主语+have/has +been +doing+其他3.时间状语:since+时间点,for+时间段等。例子:I have been sitting here for an hour. The
10、 children have been watching TV since six oclock.十、一般过去时与现在完成时的转换 在现在完成时中,延续性动词能与表示一段时间的状语连用,瞬间动词却不能。但是,可用别的表达方式:瞬间动词用于“一段时间 + ago”的一般过去时的句型中;瞬间动词可改成与之相对应的延续性动词及短语,与一段时间连用;瞬间动词用于“It is + 一段时间 + since + 一般过去时”的句型中,表示“自从以来有时间”的意思,主句一般用it is来代替It has been;瞬间动词用于“Some time has passed since + 一般过去时”的句型中。
11、请看: A. He joined the League two years ago. B. He has been in the League for two years. C. It is two years since he joined the League. D. Two years has passed since he joined the League.一 自主复习试着做下列题,不会的,快速阅读所给教材相关部分,继续完成。1.By the time you arrived in London, we _ in Europefor two weeks. A. had stayed
12、B. shall stay C. will have stayed D. have been staying 2. I _with some friends until I find a flat. A, am living B, live C, have lived D, will have lived 3. You _ television. Why not do something more active? A. always watchB are always watchingC have always watchedD have always been watching4.-It s
13、eems that she is thinking about something.-Yes, she cannot remember what key she _ to her computer. A set B has set C had set D sets 二、合作学习(由前后4人组成的大组内合作:把你的答案说出来与同学交流,不同意见进行讨论,小组内达成共识,并将你的困惑提出来让同学帮助解决或求助老师)。【在学生学习过程中,教师巡视,了解学情,都会做的题不用再一个一个的提问,提问意见不一致的题】三、展示交流(教师组织提问,4人小组派代表发言,向全班展示交流学习成果,小组间进行互评纠错、
14、补充)四互讲巩固(2人小组分别将上述问题答案的原因复述一遍,同位之间进行互讲)。【精讲点拨】根据学情确定所讲内容,重点讲那些学生讨论交流后还弄不明白的问题以及需要拓展的知识【中考链接】5.You dont need to describe her. I _ her several times.A. had metB. have met C. metD. meet6.Remember to send me a photo of us next time you _ to me. A. are writing B. will write C. has written D. write 7.I _p
15、ing-pong quite well, but I havent had time to play since the New Year. A. will play B. have played C. played D. play 【达标测评】(4人小组大组长组织评价,2人小组互改,大组长检查,组内交流、达成共识;各组代表与全班交流做题情况,教师讲评)。【拓展延伸】填空。先独立做,然后小组内交流。8. I can guess you were in a hurry. You _ your sweater inside out. A. had worn B. wore C. were wearing D. are wearing 9. The traffic in our city is already good and it _ even better. A. gets B. got C. has got D. is getting 10. -Where do you think _he _the computer? - Sorry. I have no idea. A. has; bought B. 不填; bought C. did; buy D. 不填; buys
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