小学英语四种时态的区分及练习HEN system office room 【HEN16H-HENS2AHENS8Q8-HENH1688】一般现在时：表示经常习惯发生的事，经常与always（总是）, usually（通常） ,often（经常）, sometimes（有时）, every(每个)，at+点钟连用。
结构：主语是复数动词用原型，主语是第三人称单数动词用三单。
三单变化规则：1.直接在动词后+s,例clean—cleans2.以s,x, ch,sh,或o结尾的动词+es 例watch--watches, dish—dishes, fix--fixes, do—does, go—goes3. 以辅音字母+y结尾的动词变y为i 再+es,例 fly—fliesstudy—studies(以元音字母+y结尾，直接+s 例 play—plays)不规则变化：have—has一般现在时句型转换：1.变疑问，当句子中有be或情态动词can时，一提，二变，三问号。
变否定，在be或can后+not.例：肯定句She is a girl. 疑问句Is she a girl 否定句 She is not a girl.I can swim. Can you swimI can not swim.2. 变疑问，当句中没有be或can时，在句首+助动词（do或does）动词还原。
变否定，在动词前+don’t或doesn’t, 动词还原。
例：肯定句 We get up at 6:oo. 疑问句 Do you get up at 6:00?否定句 We do not get up at 6:00.例：肯定句 He goes to school by bus. 疑问句 Does he go to school by bus?否定句 He does not go to school by bus.用动词的适当形式填空:(go) to school at 7:00.often （eat）breakfast at 6:10。
uausally （study）English at 17:30.（like）playing football after school.father (watch) TV every evening.(not listen) to music on Monday.7. Tom (not go) to the zoo on Sunday.8. There （be）some tea in the cup.9. Amy and I often ___________ (see) a film on the weekend.she (do) homework现在进行时：表示正在发生或正在进行的事，句中经常有（now, look, listen, it’s+几点钟等提示词）结构: 主语+be动词（am, is are）+动词ing(现在分词)现在分词变化规则：1. 在动词后直接加ing, 例: go-going 。
2. 以不发音字母e结尾 , 去e再+ing, 例： take-taking,3. 辅元辅结构，且末尾只有一个辅音字母的动词要双写尾字母再加ing, 例：swim- swimming, run—running, get—getting, put-putting, sit-sitting ，begin—beginningstop—stopping , shop—shopping ,现在进行时句型转换：肯定句 She is cleaning her room now疑问句 Is she cleaning her room now (一提，二变，三问号)否定句 She is not cleaning her room now(在be动词后+not)特殊疑问句的结构：疑问词 + be + 主语 + 动词ing?例: What are you doing.一、写出下列动词的现在分词：play________ run________ swim________ make________go________ like________ write________ skate________ read________ have________ sing________dance________ put________ see________ buy________ love________live________ take________ come________ get________stop________ sit________ begin________ shop________ write二、用所给的动词的正确形式填空：boy _______ (draw) a picture now.2. Listen .Some girls ________ (sing) in the classroom .3. My mother ________ (cook) some nice food now.4. What ________ you ________ (do) now?5. Look. They _______ (have) an English lesson.________ (not water) the flowers now.7. It’s 5 o’clock now. We ________ (have) supper now.8. _______ Helen (wash) clothes-Yes, she is.一般将来时：表示计划，打算将要发生的事。
经常和tomorrow, next…等表示将来的时间连用结构：主语+be going to +动词原型 / 主语+will+动词原型一般将来时句型转换：肯定句：We are going to take pictures tomorrow.疑问句:Are you going to/will take pictures tomorrow(一提，二变，三问号)否定句:We are not going to /will take pictures tomorrow.（在be或will后+not）特殊疑问句结构：疑问词+be going to /will+主语+V例：What are you going to /will do tomorrow?用所给动词的适当形式填空is a sunny day. We ___________________ (have) a picnic this afternoon.2. My brother _______________ (go) to Shanghai next week.often ______________(go) to school on foot. But today is rainy. He ______________ (go) to school by bike.4. What will you do do next weekend I__________ (watch) TVand ____________ (catch) insects?5. Tomorrow is Friday。
What _____she _________ (do)She ______________ (watch)TV and (listen) to music.6. you (visit) your grandma next Saturday？选择填空________ an English evening next Sunday.A. are havingB. are going to haveC. will havingD. is going to have2. ______your brother ______ a magazine from the bookstoreA. Are; going to buyB. Is; going to buyC. Will; buysD. Are; going to buys year I 14 years old.,be going to be going to______ two English classes tomorrow morning.A. are going to haveB. is going to haveC. are havingD. is going to be 一般过去时：表示过去发生的事，动词要用过去式，经常与yesterday, before, ago,last…等表示过去的时间连用。
结构：主语+过去式过去式变化规则：1.一般在动词原形末尾直接加上-ed。
例：look-looked。
2．以不发音的字母e结尾的动词，去e再加-ed。
如：live-lived。
3.以辅音字母+y结尾的动词，变y为i，再+-ed。
例：study-studied。
（元音字母+y结尾直接+ed, 例play----played）4.辅元辅结构，且末尾只有一个辅音字母的动词要双写尾字母再加-ed例：stop-stopped。
一般过去时时句型转换：1.变疑问，当句子中有be动词时，一提，二变，三问号。
变否定，在be后+not.例：肯定句There was a book yesterday. 疑问句Was there a book yesterday 否定句 There was not a book yesterday.2. 变疑问，当句中没有be动词时，在句首+助动词did,动词还原。
变否定，在动词前+didn’t动词还原。
例：肯定句 We saw a film last Saturday.疑问句 Did you saw a film last Saturday否定句 We didn’t saw a film last Saturday.特殊疑问句结构：疑问词+did +主语+V 例：What did you do last night?用所给单词的适当形式填空⒈He _____ (visit) the Great Wall last year.(have) a good time yesterday.often _______ (go) to school by bus last year.________ (live)in the village when I was a child.(see) a big tiger in the nature park last year.(do) the housework yesterday.(do) you _______(go) cycling yesterday?(do)you _________(play) badminton yesterday?No, I didn't. I_____ (draw)some pictures in the art room.9.. I ______ (eat) a lots of fresh food in the dining hall yesterday.(be) many sheep on the farm last year.。