002-5,语法

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20 -20 学年 学期 年级 导学案 编号: 使用时间:20 年 月 日 1 课题: Unit Two Grammar

编写人: 审核组长: 审核主任: 温馨寄语:An hour in the morning is worth two in the evening. 一日之计在于晨

【学习目标】 1. 理解并掌握一般过去时、过去进行时和过去完成时的用法 2. 掌握这三种时态的区别 【重点知识与难点知识】 重点知识:掌握三种时态及这三种时态的时间状语 难点知识:掌握并能正确使用这三种时态

一、新课导学与探究 (一)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、经常性的动作、行为; 2.时间状语:ago, yesterday, the day before yesterday, last week,last(year, night, month…), in 1989, just now, at the age of 5, one day, long ago, once upon a time(很久以前), etc. 3.基本结构:be动词、行为动词的过去式 动词的过去式分为规则动词和不规则动词两种。 ① 一般情况下在动词原形后直接加-ed。 anted,played ② 以不发音的字母e结尾的动词,去掉e再加-ed。 hoped,lived ③ 重读闭音节单词需双写最后一个辅音字母再加 -ed stopped ④ 以辅音字母+y结尾的动词变y为i,再加-ed。 studied,worried 以元音字母+y结尾的动词,直接加-ed. sayed, enjoyed 不规则动词有其自己的变化形式,只能分别记忆。 (二)过去进行时 1 用法:过去某个时间或某段时间正在发生的动作 例:He was cooking at six last night. 昨天晚上六点,他正在做饭。 I was staying here from March to May last year. 去年从3月到5月,我一直呆在这里。 2 时间状语:at nine last night/ at that time= then/ at this time yesterday /或有when the teacher came in/ while he was reading的提示 3 过去进行时的构成:was\were +现在分词 4 过去进行时的固定句型 Jim was reading when the teacher came in. 当老师进来的时候,吉姆正在读书。

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2 Jim was reading while Kate was watching TV. 凯特正在看电视的同时,吉姆正在读书。 Jim came in while Kate was watching TV. 在凯特正在看电视的时候,吉姆进来了。 请比较 He watched TV last night. (过去时间last night, 用一般过去时) He was watching TV at nine last night (过去时间last night+点时间at nine, 用过去进行时) (三)现在完成时 1 现在完成时的"完成用法" 表动作或状态发生在过去但它的影响现在还存在. He has turned off the light. (动作结束于过去,但说明的是现在的情况--灯现在不亮了。) I have spent all of my money. (含义是: 现在我没有钱花了.) Jane has laid the table. (含义是: 现在桌子已经摆好了.) 2 现在完成时的"未完成用法" 表动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。这里的动词要用持续性动词。常与for(+时间段), since(+时间点)连用. Mary has been ill for three days. Mary has been ill since three days ago. 注意:1.现在完成时不能单独与准确时间连用,(如表示过去的时间状语) 如yesterday(morning、afternoon),last(morning、afternoon)等,除非与for, since连用. 2.现在完成时往往同表示不确定的过去时间状语连用 如already(肯定), yet(否定,疑问), just, before, recently, still, lately等: He has already obtained a scholarship. I haven't seen much of him recently (lately). We have seen that film before. Have they found the missing child yet ? 3. 现在完成时常与表频度的时间状语连用, 如ever, never, twice, several times等: Have you ever been to Beijing? I have never heard Bunny say anything against her. I have used this pen only three times. It is still good. George has met that gentleman several times. 4. 现在完成时还往往可以同包括现在时间在内的时间状语连用, 如up to these few days/weeks/months/years, just, up to present(now), so far等: Peter has written six papers so far. Up to the present everything has been successful. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作. We have had four texts this semester. 5. have been to 和have gone to的区别 have been to 强调“去过”,现已不在那里,如: 20 -20 学年 学期 年级 导学案 编号: 使用时间:20 年 月 日 3 He has been to the USA three times.他去过美国三次。(过去“到美国”,现在已“不在美国”) have gone to主要强调的是“去了”,现在人不在说话的现场,如: --Where's your mother? --你妈妈在哪?--She has gone to the hospital. --她去医院了。 has been in 一直在某地

英语的行为动词有持续性动词和瞬间性动词之分,使用中应注意两者的区别。 1、持续性动词: 表示一个动作可以持续一段时间或更长时间。 常见的study, play, do, read, learn, drive, write, clean , sleep, speak, talk, wait, fly, stay, sit等。 2、瞬间性动词: 表示一个动作发生在一瞬间,非常短暂。亦称终止性动词。 常见的begin, start, finish, go, come, leave, find, get up, arrive, reach, get to, enter, hear, stop, open, close, become, buy, borrow, lend, happen, join, lose, die, take away, put up, set out等 瞬间性动词在完成时中如要与表示持续一段时间的状语连用,通常有两种方法: (1)用意思相当的持续性动词来替换 He has been in the army/a soldier for three years. (他参军已有3年了。)不用has joined 常用瞬间动词相应持续性动词关系: 1、go—be away 2、come—be here 3、come back—be back 4、leave—be away(be not here) 5、buy—have 6、borrow—keep 7、die——be dead 8、begin——be on 9、finish—be over 10、open——be open 11、close——be closed 12、lose——be lost 13、get to know—know 14、turn on—be on 15、get up——be up 16、sit down—sit/beseated 17、join—be in(…)或be a…member 18、become—be (2)用it is…since…结构来替换瞬间动词 eg.电影已经开映5分钟了。(两种方法) The film has been on for five minutes. It’s five minutes since the film began. 二、课堂测试 1、Both his parents look sad. Maybe they _______what’s happened to him . A. knew B. have known C. must know D. will know 2、He has _______ been to Shanghai, has he? A. already B. never C. ever D. still 3、Have you met Mr. Li ______? A. just B. ago C.before D.a moment ago 4、The famous writer _____ one new book in the past two year . A. is writing B.was writing C.wroteD.has written 5、—Our country ______ a lot so far . —Yes. I hope it will be even ______. A. has changed ; well B. changed; good C. has changed ; better D. changed; better 6、Zhao Lan ______already ______in this school for two years . A. was; studying B. will; studC. has; studiedD. are; studying