Welcome to my class!,Grammar(1）,定义: 表示习惯、经常性的动作 结构: do、 does 标志语：,一般现在时: Present Tense,usually、often、never、 sometimes、every day,Do you know?,第一人称和第二人称的一般现在时，其谓语动词没有形式的变化， 其否定形式一般是在谓语动词前 dont,一般疑问句在句前加do 但当主语是第三人称单数时，谓语动词形式有变化，一般在动词 末尾加s，否定句在行为动词前加doesnt， 一般疑问句在句前加 does,动词三单的变化： 1、一般动词后加s，如：reads,plays,works,makes 2、以 s,x,ch,sh, 结尾，后加es. 如：watches, 3、以辅音字母加o结尾,一般加es ,如：does,goes 4、辅音字母+y结尾的单词,去y,加ies,如：worries studies,Exercise(1),The twins _(wash) the clothes every day. Sometimes he _ (play) basketball over there. When _ Sally often _(do) her homework?,wash,plays,does,do,定义: 结构: 标志语:,Grammar(2),过去时: Past Tense,表示过去发生的动作,did,yesterday(昨天), last (上一个), this morning（今天早上），.ago(以前), in 2002(在2002年)，等,I cleaned the room yesterday.,I did some cleaning yesterday.,行为动词的一般过去时:,陈述句：主语+动词过去式+其它,She did homework yesterday .,否定句：主语+助动词didnt+动词原形+其它,She didnt do homework yesterday.,一般疑问句：Did +主语+动词原形+其它,Did she do homework yesterday? Yes, she did. / No, she didnt.,常用时间,常与一般过去时态连用的时间有：,yesterday yesterday morning (afternoon, evening) last night (week, month, year) two days ago, a week ago, three years ago in 1990, (in 1998),规则动词的过去式变化规则,一般在词尾加ed,playplayed,以不发音的e结尾的，只加-d,以辅音字母+y 结尾的，变y为i ,再加ed,以一个辅音字母结尾的重读闭音节，先双写这个辅音字母，再加-ed,Exercise(3),The twins _(wash) the clothes yesterday. The day before yesterday he _ (play) basketball over there. _ Sally _(sing) two hours ago?,washed,played,句型转换： 1 Mr Li invited her to the party.（改为一般疑问句） Mr Li her to the party? 2 They asked the teacher a question.（改为否定句） They the teacher a question. 3 Tom watched TV for two hours.(对画线部分提问） Tom TV? 4 She helped me do some cleaning.(对画线部分提问） She you ?,Did,invite,didnt ask,How long did,watch,What did,help,do,表示现在正在发生的动作,现在进行时: Present Progressive,结构: be (is, am, are) + doing 肯定句：sb+be+v.ing+ 否定句：sb+be+not + v.ing+ 疑问句：Be+sb+v.ing? 特殊疑问词+be+sb+ving?,标志语： Look、 Listen 、now,动词-ing形式的构成：,一般在动词原形后+ing,以不发音的e结尾的，去e，+ing,重读闭音节以一个辅音字母结尾的，双写这一字母+ing,Exercise(2),The twins _(wash) the clothes now. Look! He _ (play) basketball over there. Listen! _ Sally _(sing)?,are washing,is playing,时态,现在进行时：,一般现在时：,一般过去时：,现在正在进行的动作,经常或习惯性的动作或存在的状态。,过去某个时间或时间段发生的动作或存在的状态。,(The Present Continuous Tense),(The Simple Present Tense),(The Simple Past Tense),各时态常用的信息词,现在进行时：,一般现在时:,一般过去时:,now , Look! Listen! at this time Where is ? Dont talk! Its 8:00am.,always , usually, often, sometimes ,seldom, never, every day, every ,three times a day,last night, last, two days ago, ago, in 1999, in +过去的年份, just now =a moment ago, yesterday, yesterday morning,改一般疑问句的方法：,改否定句的方法：,首先看有无be动词，如果有，将be提到句首并大写，句末打问号. 如果没有be动词，看原句的动词形式来决定借用助动词do/does/did,并且行为动词要还原。,V-原形 V-s/es V-ed(过去式),+动词原形?,以此类推,首先看有无be动词，如果有，在be 动词后面加not. 如果没有be 动词，看原句的动词形式来决定借用助动词do/does/did,并在后面加not,并且行为动词要还原。,主语+dont/doesnt/didnt+动词原形,现在分词 的构成：,动词第三人称 单数的构成：,过去式 的构成：,直接加-ing. 重读辅元辅，双写尾字母加-ing. 以e 结尾去e加-ing .,直接加-s. 以s, x, ch, sh, o结尾加-es. 以“辅音+y “结尾变y 为i再加-es.,直接加-ed. 以e结尾只加d. 重读辅元辅，双写尾字母再加-ed. 以“辅音+y”结尾变y 为i 再加-ed.,表格对比学习,be+v-ing (现在分词）,在be 后加上not,Be提到句首,V -原形 V-三人单,在行为v.前借用do ,does后加not，行为动词还原,Do,Does 提到句首，行为动词还原,V-ed (过去式）,在行为v.前借用did后加not，行为动词还原,Did 提到句首，行为动词还原,判断下列信息词是属于哪种时态,last night now every day Look! yesterday often Listen! two years ago always in 1897 three times a week,一般现在时 一般过去时 现在进行时,He is a teacher.,2. Kangkang comes from China.,3. I usually take the bus to work.,4.They are having classes.,5.Jane played the guitar last night.,先（一般疑问句） 再（否定句）,Is he a teacher? He isnt a teacher.,Does Kangkang come from China? Kangkang doesnt come from China.,Do you usually take the bus to work? I dont usually take the bus to work.,Are they having classes? They arent having classes.,Did Jane play the guitar last night? Jane didnt play the guitar last night.,句型变化操练,用所给动词的适当形式填空。,1. Listen! Mary _ ( sing) now. 2. A young man _ (run) on the playground now. 3. My mother _(watch) TV play every day. 4. Old Bush _(visit) China again last month. 5. I _ (play) sports three times a day. 6. Look! Lucy and Lily _(read) books. 7. There _(is) a football match yesterday afternoon. 8. Our class _( go) to the zoo three days ago.,is singing,is running,watches,visited,play,are reading,was,went,Exercise,Blank filling: 1.It (rain) hard now. It (rain) quite often during the month of march. 2.Where is she? She (show) the visitors around the city. 3. What Li Lei (do) last night? 4. My parents (work) five days a week. 5. There (be) three bottles of orange on the table just now.,is raining,rains,is showing,did,do,works,were,Goodbye!,