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1、七年级英语三大时态,在英语中，不同时间发生的动作或存在的状态要用不同的动词形式来表现。,每种时态的概念、信息词、结构、句式变化、以及某些时态间的相互区别,重点掌握,时态,Tense,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),知识结构,一般过去时,构成,用法,常用时间,动词的过去式,1、表示过去某个时 间发生的动作或 存在的状态。
2、 2、表示过去经常或 反复发生的动作。,yesterday last night in 1990 two days ago,用 法,1、表示过去某个时间发生的动作或存在的状态。 He was here yesterday. I got up at six thirty yesterday morning. My father was at work yesterday afternoon. Did you have a good time last summer?,2、表示过去经常或反复发生的动作。 My father often went to work by bus last year.
3、When I was a child, I often listened to music.,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),规则动词过去式的构成,构成规则,例词,1、一般在动词原形末尾加 ed look looked play played start started 2、结尾是 e 的动词加 - d l
4、ive lived hope hoped use used,3、末尾只有一个辅音字母的 重读闭音节词，先双写这 个辅音字母，再加ed,stop stopped plan planned trip tripped,4、结尾是“辅音字母+y”的动词， 先变“y”为“i”再加ed,study studied carry carried,清念 /t/ ,元浊/d/ ; /t/ /d/ 之后念/id/,规则动词词-ed的读音,说明： 1、清念 /t/ ，即 ed 在清辅音后面念 /t/ ,例：finished helped passed cooked 2、元浊 /d/ ,即 ed 在元音，浊辅音后面念
5、/d/ , 例：borrowed enjoyed called moved 3、/t/ /d/ 之后念 /id/ , 即 ed 在 /t/ /d/ 音后面念 /id/ 例：wanted shouted needed counted,PRACTISE,改写句子： 1、Lucy did her homework at home.（改否定句） Lucy _ _ her homework at home. 2、He found some meat in the fridge.（变一般疑问句) _ he _ _ meat in the fridge? 3、She stayed there for a w
6、eek.（对划线部分提问） _ _ _ she _ there? 4、There was some orange in the cup.（变一般疑问句) _ there _ orange in the cup?,didnt do Did find any How long did stay Was any,不规则动词表,Infinitive Past tense am is was are were begin begun break broke bring brought build built buy bought can could,Infinitive Past tense catch
7、 caught come came do did draw drew drink drank drive drove eat ate fall fell,答案,1. look 2. live 3. stop 4. carry 5. hope 6. trip 7. call 8. finish 9. want 10.are 11.go 12.have 13.do 14.get e 16.say 17.see 18.put 19.eat 20.take 21.read,动词过去式转换练习,将下列动词变为过去式,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! L
8、isten! 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,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
9、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.,have - look - begin- use- shop- get- dance- study-,现在分词,第三人称单数,过去式,study- finish- have- go- do- play- watch- give-,need- stop- hope- play- try- plan- visit- like-,h
10、aving looking beginning using shopping getting dancing studying,studies finishes has goes does plays watches gives,needed stopped hoped played tried planned visited liked,词形转换,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
11、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,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,He is a teacher.,2. Kangk
12、ang 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 bu
13、s 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,小小测试,判断时态形式：,He always likes playing the piano.( ) We are having an English classes now.( ) They often go home late.( ) Lucy danced the disco at the party
14、 last night.( ) I liked go to the zoo when I was young.( ) My teacher is friendly to us.( ) Look! They are playing football.( ) She was born in 1990.( ) I lost much money last night.（ ）,A.现在进行时 B.一般现在时 C.一般过去时,A,B,C,A,B,B,C,C,C,判断下列信息词是属于哪种时态,last night now every day Look! yesterday often Listen! tw
15、o years ago always in 1897 three times a week,一般现在时 一般过去时 现在进行时,Fill in the blanks with the right form of the verbs:,I _(be) ill last Sunday. Amy _ (sit) here yesterday. _ you _(clean) your room just now. My sister _ (be) born on June 5. 1996. _ (be) your parents at home just now? He _ (study) French here last year. She _ (do) homework last night. They _(go) to the zoo yester
