牛津译林版六年级下册英语现在进行时态语法详解与练习(含答案)

现在进行时态一、现在进行时的定义现在进行时是表示在现在某一时刻或某段时间正在进行的动作的时态。

二、现在进行时的构成现在进行时由“系动词（am，is，are）+ 现在分词（动词加-ing形式）”构成。

现在以动词work为例，对现在进行时的肯定句、否定句、疑问句及三、现在分词的构成1.一般在动词原形末尾加-ing。

stay --- staying do --- doing listen --- listening2.以不发音的字母e 结尾的动词，先去掉e，再加-ing。

make --- making ride --- riding give --- giving3.以一个辅音字母结尾的重读闭音节词，先双写这个辅音字母，再加-ing。

put --- putting sit --- sitting run --- running4.以ie 为重读音节结尾的单词，先去掉e，把i 变为y，再加–ing。

lie --- lying die --- dying四、现在进行时的用法1.表示现在或说话时正在进行的动作，常和下列时间状语连用：now, at thismoment, at present, these days (years), this term … 有时也与look , listen 等连用。

例句：Look, what are the monkeys eating?看，那些猴子在吃什么？2.表示当前一直或反复在进行的动作或难以终止的动作。

例句：They are running and jumping all the time.他们一直在跑啊跳啊。

练习：一、写出下列动词的现在分词形式stay __________ do __________ listen __________ suffer __________ refuse __________ close __________ operate _________ die _________work ________spend _________look _________make __________put __________sit __________run __________tie __________take _________give _________ride _________please _________win _________begin _________open _________lie _________二、用所给动词的适当形式填空1.Mary and Lucy are ________ (dance) now.2.Listen! Someone is _______ (play) the piano in the next room.3.He is __________ (sweep) the floor at the moment.4.Look ! The cat ________ ________ (eat) the fish on the table.5.A: ______ you _______ (study) French ?B: Yes , I am.6.She often ____________ (dance) after school.7.My father and mother ______ ______ (swim) in the pond.8.My sister is ________ (fly) a kite in the garden.9.We are __________ (watch) TV now.10.Be quiet ! The baby _____ ______ (sleep) now.三、改错11.We are cleanning our classroom. ______________________________12.She is sing in the next room. ______________________________13.What am you doing? ______________________________14.Mary is comeing back from Beijing.______________________________15.He often flying kites on Sundays. ______________________________16.They is reading books now. ______________________________17.My brother is plays the guitar now. _______________________________18.Sally is danceing in the room. _______________________________19.I watching TV at home now. ________________________________20.Do you listening the radio now? ________________________________答案：一、staying working takingdoing spending givinglistening looking ridingsuffering making pleasingrefusing putting winningclosing sitting beginningoperating running openingdying tying lying二、dancing playing sweeping is eating Are studying dancesare swimming flying watching is sleeping三、cleaning singing are coming fliesare playing dancing am Are1、只要朝着一个方向努力，一切都会变得得心应手。

20.7.67.6.202016:4516:45:59Jul -2016:452、心不清则无以见道，志不确则无以定功。

二〇二〇年七月六日2020年7月6日星期一3、有勇气承担命运这才是英雄好汉。

16:457.6.202016:457.6.202016:4516:45:597.6.202016:457.6.20204、与肝胆人共事，无字句处读书。

7.6.20207.6.202016:4516:4516:45:5916:45:595、阅读使人充实，会谈使人敏捷，写作使人精确。

Monday, July 6, 2020July 20Monday, July 6, 20207/6/20206、最大的骄傲于最大的自卑都表示心灵的最软弱无力。

4时45分4时45分6-Jul -207.6.20207、自知之明是最难得的知识。

20.7.620.7.620.7.6。

2020年7月6日星期一二〇二〇年七月六日8、勇气通往天堂，怯懦通往地狱。

16:4516:45:597.6.2020Monday, July 6, 2020亲爱的读者：春去春又回，新桃换旧符。

在那桃花盛开的地方，在这醉人芬芳的季节，愿你生活像春天一样阳光，心情像桃花一样美丽，感谢你的阅读。

1、生活不相信眼泪，眼泪并不代表软弱。

20.7.67.6.202016:4516:45:59Jul -2016:452、世上没有绝望的处境，只有对处境绝望的人。

二〇二〇年七月六日2020年7月6日星期一3、成功都永远不会言弃，放弃者永远不会成功。

16:457.6.202016:457.6.202016:4516:45:597.6.202016:457.6.20204、不要为它的结束而哭，应当为它的开始而笑。

7.6.20207.6.202016:4516:4516:45:5916:45:595、生命的成长，需要吃饭，还需要吃苦，吃亏。

Monday, July 6, 2020July 20Monday, July 6, 20207/6/20206、生命太过短暂，今天放弃了明天不一定能得到。

4时45分4时45分6-Jul -207.6.20207、放眼前方，只要我们继续，收获的季节就在前方。

20.7.620.7.620.7.6。

2020年7月6日星期一二〇二〇年七月六日8、拥有梦想只是一种智力，实现梦想才是一种能力。

16:4516:45:597.6.2020Monday, July 6, 2020亲爱的读者：春去春又回，新桃换旧符。

在那桃花盛开的地方，在这醉人芬芳的季节，愿你生活像春天一样阳光，心情像桃花一样美丽，感谢你的阅读。

1、盛年不重来，一日难再晨。

及时宜自勉，岁月不待人。

20.7.67.6.202016:4516:45:59Jul -2016:452、千里之行，始于足下。

2020年7月6日星期一3、少年易学老难成，一寸光阴不可轻。

16:457.6.202016:457.6.202016:4516:45:597.6.202016:457.6.20204、敏而好学，不耻下问。

7.6.20207.6.202016:4516:4516:45:5916:45:595、海内存知已，天涯若比邻。

Monday, July 6, 2020July 20Monday, July 6, 20207/6/2020 6莫愁前路无知已，天下谁人不识君。

4时45分4时45分6-Jul -207.6.20207、人生贵相知，何用金与钱。

20.7.620.7.620.7.6。

2020年7月6日星期一二〇二〇年七月六日8、勇气通往天堂，怯懦通往地狱。

16:4516:45:597.6.2020Monday, July 6, 2020亲爱的读者：春去春又回，新桃换旧符。

在那桃花盛开的地方，在这醉人芬芳的季节，愿你生活像春天一样阳光，心情像桃花一样美丽，感谢你的阅读。

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现在完成时与现在完成进行时态讲解及练习(含答案)

时态现在完成时一．基本结构：助动词have/has+过去分词(done) 。

表示过去发生的动作对现在造成的影响，或过去发生的动作还未结束，一直持续到现在或将来，重点在于对现在的影响。

二．句型：否定句：主语+have/has+not+过去分词+其他.一般疑问句：Have/Has+主语+过去分词+其他.简略答语: Yes, 主语+ have/has.(肯定)No, 主语+ haven't/hasn't.(否定)三．用法1.“已完成”用法 :表示一个过去发生并结束的动作对现在造成的影响或结果。

这一类情况可以细致分为下述两种情况。

1）表示开始于过去的动作刚刚结束。

常和just，now，already，yet，not…yet等不确定的时间状语连用。

Li Ming has just turned off the light. 李明刚刚把灯关上。

（说明现在灯关上了）I've finished my homework now. 现在我已经做完作业了。

（说明可以交作业或做别的了）2）表示过去动作的结果，现在仍残留着。

一般不用时间状语。

I have lost my pen. 我把笔丢了。

（说明过去某时丢的，现在我还没找到这支笔）She has become a teacher. 她已经当了老师。

（说明她现在仍是老师）2.“未完成”用法。

表示动作或状态从过去某时开始，持续到现在的动作（用行为动词表示）或状态（be动词表示），常与for（+段时间）、since(+时间点或过去时的句子)连用。

①for+时段（for a long time，for a month）②since+过去一个时间点（译为：自从……以来，如since 1991 、since yesterday）③since+时段+ago （since 2 days ago）④since+从句（过去时）●⑤It is+时段+since+从句（过去时）⑥其它常见：today，this week（month），lately，recently，these days，in the past few days，during the last two weeks，，so far，up to now，till（until）now等。

牛津译林英语-六年级下册-易错考点-分类练-(答案详解)-Unit4

牛津译林英语六年级下册易错考点分类练-Unit4(答案详解）一．look 短语辨析1．To keep safe，you must cars and bikes．（）A．look for B．look out forC．look after参考译文：为了保证安全，你必须提防小汽车和自行车．易错点睛：该题考查短语运用．look for寻找，look out for提防，小心，look after照看．根据"To keep safe"推测后面的句意：必须提防小汽车和自行车．所以选：B。

二．现在进行时2．﹣﹣What is Mike doing（do）？﹣﹣He is walking（walk）on the road．参考译文：﹣﹣迈克正在做什么？﹣﹣他正在道路上行走．易错点睛：根据is可知，这里是现在进行时，构成be+doing，第一个空，询问Mike在做什么，用doing；第二个空，is后面跟walk的现在分词walking．所以填：doing，walking．三．情态动词+动原3．A good student must ________in class．（）A．listens to the teacherB．listening to teacherC．listen to the teacher参考译文：一个好学生，上课必须认真听讲。

易错点睛：考点一：must+动词原形。

考点二听老师讲课：listen to the teacher. 所以选：C4．You can on the pavement．（）A．waiting B．waits C．waited D．wait参考译文：你可以在人行道上等．易错点睛：考查动词原形．由题，句中使用情态动词can，后面要搭配动词原形，即wait"等待"．所以选：D．四．系动词+形容词---系表结构。

5．your English ？（）A．Do well B．Is well C．Is good参考译文：你的英语好吗？易错点睛：该题考查系动词和形容词．分析题干可知，这是一个一般疑问句，主语是your English看做第三人称单数，句子中出现固定短语be good at"擅长于"，根据主谓一致原则，系动词用is，提到句首，首字母大写．第二个空，缺少形容词good．所以选：C．五．情态动词词义辨析6．You ________watch TV．You ________go to bed now．It's too late．（）A．can；must B．can't；mustC．mustn't；can参考译文：你不能看电视。

小升初语法讲解现在进行时专题训练(讲义)牛津译林版英语六年级下册

小升初语法讲解现在进行时专题训练（讲义）牛津译林版英语六年级下册知识点讲解现在进行时1. 现在进行时的构成形式：sb. am/ is/ are +doing2. 现在进行时用法：1). 表示现在正在进行或发生的动作。

例：Jerry is reading a book now.2). 表示当前一段时间内的活动或现阶段正在进行的动作。

例：They are preparing for their holiday these days.3. 动词的现在分词ing变化规则1). 一般情况下，动词后直接加ing. Eg.: play playing2). 以不发音的字母e结尾的动词，先去掉字母e, 加ing. Eg.: write writing3). “辅元辅”结构，双写尾辅音字母，再加ing. Eg.: stop stopping4). 以ie结尾的动词，ie变y加ing. Eg.: lie lying, die dying, tie tying4. 相关句型1) 一般疑问句：Is/ Are +主语+doing …?2) 否定句：主语+am/ is/ are +not doing…精选精练1．Mary can’t ______ her bag. Now she ______. ()A．find; is looking for it B．find; looks for it C．look for; is finding it 2．—__________ your parents __________ the house? ()—Yes, they are.A．Are; cleaning B．Do; clean C．Do; cleaning3．—______ you listening to music? ()—No, I’m watching TV.A．Do B．Are C．Be D．Is4．Don’t shout. My mother _______. ()A．sleeps B．is sleeping C．sleeping5．—Who _____ lunch? ()—My dad ______.A．cooks; is B．cook; does C．is cooking; is 6．—What’s Jill doing? ()—He’s ______ his pictures ______ his friends.A．show; to B．showing; to C．showing; for7．It is often ______ in the UK. Look, it is ______ now. ()A．rainy; rain B．rainy; raining C．rains; raining 8．—What’s Mike doing? ()—He’s _______ his toy ship _______ his classmates.A．show; for B．showing; for C．showing; to 9．—What are you doing? ()—I’m ______ my hands, because it’s time ______ have lunch.A．washing; to B．washing; for C．to wash; to10．Liu Tao ______ Mike ______ his holiday. ()A．is asking; to B．asks; for C．is asking; about 11．Those young ladies are sitting on the grass and ______ now. ()A．chat B．chats C．chatting12．Look! The horses ______ through the grass. ()A．run B．are running C．ran13．Tim, ______ shout in the classroom. We ______ a Chinese lesson now. () A．doesn’t; had B．don’t; had C．don’t; are having D．doesn’t; are having14．The girl is ______ beautifully. And she can dance ______, too. ()A．singing; beautifully B．sing; beautiful C．/; beautifully 15．Bobby is ________ Wendy _________ her birthday party. ()A．asked; with B．asking; with C．asked; for D．asking; about 16．Chinese New Year is ________. ()A．e B．ing C．eing17．Look! The kite is ________ high. ()A．flying B．flew C．flies18．It often ________ here in summer. Now it’s ________. ()A．raining; rainy B．rains; rainingC．rainy; raining D．raining; raining19．Mike is _____ his toy ship _____ his friends. ()A．showing; to B．showing; for C．show; to20．It’s nine o’clock! The students _____ an English lesson. ()A．have B．having C．are having D．are have 21．_______ your sister listening to music in her bedroom? ()A．Are B．Does C．Is D．Do 22．—What are you doing? ()—I am ________ a card.A．makes B．making C．make 23．—What’s Tim doing? ()—He’s _____ his toy ship _____ his classmates.A．show; for B．showing; to C．showing; for 24．Don’t shout, Tim. Your father ______. ()A．sleep B．sleepy C．is sleeping D．to sleep 25．The children are ______ carefully, but they can’t ______ anything. () A．listening; hear B．listening; listen C．hearing; hear 26．Look! They’re _____. ()A．siting quietly B．sit quietly C．sitting quietly 27．The driver is ______ the traffic lights and ______ the policeman. () A．points at; talks with B．pointed at; talked with C．pointing to; talking to 28．Joe ___________ his photos ___________ his friends. ()A．show; to B．is showing; to C．is showing; for 29．My parents _______ my little sister to talk now. ()A．is teaching B．are teaching C．teaches30．Look at the giraffes. They ______ leaves on the trees. ()A．is eating B．eat C．are eating D．to eat 31．Mike ______ football well. Look! He ______ it with friends there. () A．play; is playing B．plays; is playing C．plays; playing 32．Mike with his friends_______ basketball. ()A．is playing B．playing C．are playing33．—Where’s Liu Tao? ()—He ________ his grandpa in the garden.A．helps B．helping C．is helping34．—________ is Mary? ()—She ________ in the bedroom.A．What; is sleeping B．Where; is sleeping C．Where; sleeps 35．—Where is Dan? ()—He __________ in the playground. He __________ there every morning.A．runs; runs B．is running; runs C．is running; is running 36．Nancy _________ her pencil now. But she can’t _________ it. ()A．looks for; find B．finds; look forC．is looking for; find D．finds; looking for37．Chinese New Year _______ soon. ()A．e B．es C．is ing D．is going to e 38．She ______ on a new dress now. ()A．tries B．is trying C．tried D．is going to try 39．He usually _________ books after dinner. Look! He _________ now. () A．read; is reading B．looks; is lookingC．reads; is reading D．watches; is watching参考答案：1．A【详解】句意：玛丽找不到她的包了。

译林六年级总复习四种时态复习讲解

总复习时态复习一、一般现在时时间状语：often, usually, sometimes, always, every week (day/month), on Sundays，never1.肯定句：主语(I, you, we, they,复数)+动词原形主语(第三人称单数he, she, Tom…)+动词(变化)★动词+s的变化规则1．一般情况下，直接加-s，如：cook-cooks,2．以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes3. 以“辅音字母+y”结尾，变y为i, 再加-es，如：study-studies4. 不规则变化：have-has2.否定句：主语(I, you, we, they,复数)+don’t+动词原形主语(第三人称单数he, she, Tom…)+does n’t+动词原形3.一般疑问句：Do+主语(I, you, we, they,复数)+动词原形Does+主语(第三人称单数he, she, Tom…)+动词原形4.特殊疑问句：疑问词+ do +主语(I, you, we, they,复数)+动词原形+…?疑问词+ does +主语(第三人称单数he, she, Tom…)+动词原形+…?二、现在进行时:时间状语：now, look…, listen… ,It’s …o’clock.1.肯定句：主语+be+现在分词(v-ing)【be: am , is ,are】2.否定句：主语+be +not+现在分词(v-ing)3.一般疑问句：Be+主语+现在分词(v-ing)★动词加ing的变化规则1．一般情况下，直接加ing，如：cook-cooking2．以不发音的e结尾，去e加ing，如：make-making,3．如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running, stop-stopping三、过去时:时间状语：yesterday(evening…), just now, a moment ago,last week(year, month, Sunday)，last+节日three days ago, ten years ago1.be动词在一般过去时中的变化：肯定句：主语+was/were否定句：主语+was/were +not一般疑问句：Was/Were +主语⑴am 和is在一般过去时中变为was。

译林版英语六年级下册英语语法时态讲解

小学英语难点之---时态间的转换适用年级：六年级下学期复习通常情况下，小学英语与中学的不同这处在于其侧重于基础词句的运用，而江苏省2014译林版的五、六年级英语教材，无论是其词句的广度，还是语法深度的考察都胜过之前的牛津教材。

其中，一般现在时、一般过去时、现在进行时及一般将来时等四种时态的互相转换成为重中之重。

下面本人将小学七种常见转换方法进行介绍。

一．一般现在时转换成一般过去时方法：一般现在时转换成一般过去时很简单，只需要将一般现在时中的动词（含be动词）替换成过去式即可。

例：①She is a student (用three years ago改写)→She was a student three years ago②He lives in China （用last year改写）→He lived in China★★注：一般现在时改为一般过去时，要注意特殊动词的过去式。

小学阶段常见的过去式有：buy 买——bought bring带来---broughtcan 能——could come 来——camedo 做——did draw 画画——drewdrink 喝——drank drive 驾车——droveeat 吃——ate feel 感觉——feltfind 找寻——found fly飞——flewforget 忘记——forgot get 得到——gotgive 给予——gave go 去——wentgrow 成长——grew have 有——hadhear 听——heard keep 保持——keptknow 知道——knew learn学习—learnt, learnedlet 让——let make 做——mademeet 见面——met bite咬----bitput 放——put read 读——readride 骑——rode run 跑——ransay 说——said see 看见——sawsing 唱歌——sang sit 坐——satsleep 睡觉——slept speak 讲话——spokespend 花钱——spent stand 站立——stoodsweep 打扫——swept swim 游泳——swamtake 拿到——took teach 教——taughttell 讲述——told hit敲打——hitcut切---cut write 写——wrote巩固提高：①He often reads books in the room ( 用just now改写)He② I always watch TV in the evening (用last night改写)I二．一般过去时转换成一般现在时方法：一般过去时转换为一般现在时只需将动词过去式变成动词原形或者动词第三人称单数形式。

现在进行时讲义译林版六年级2024年小升初语法专项复习(10)

专题4 现在进行时讲义与练习（含答案）一、现在进行时的构成与语义句型：be doing sth.语义：表示现在正在进行的动作be动词：am , is , are二、现在进行时的标志性单词：now，listen，look，at the moment三、动词的现在分词（又称ing形式，现在进行式)的词形变化1、以不发音的字母e结尾的单词，去掉e再加ing 如：dance — dancing2、以一个辅音字母结尾的重读闭音节，双写后面的辅音字母，再加ing如：run — running swim — swimming3、除此以外直接+ing，如：do — doing wash — washing4、以ie结尾的，变ie为y 再加ing 如：lielying四、现在进行时口诀（背熟）主语在句首，am are is 跟在后，动词ing形式跟着走，其他成分不可丢。

一般疑问句这样变，把be提到主语前，否定句也很简单，be后再把not来添。

看到now，listen，look 表示动作在进行。

五：不是所有的动作都可以用现在进行时（了解）有一些表示状态、结果、感觉和感情的动词，如have（有），be（是），like （喜欢），know（知道），want（想要），think（认为），see（看见），hear （听见），forget（忘记）等，一般不用现在进行时。

如：I have a new bike now．现在我有一辆新的自行车。

但不说：I'm having a new bike now．现在进行时练习题一、写出下列动词的现在分词形式work_______ sing_______ play_______study_______have _______dance ______write______take________run_________sit_________ shop______swim_______lie________ die_________begin_______get_______二、用括号内所给单词的适当形式填空。

2023年小学英语六年级小升初语法总复习(二)现在进行时 (译林版含答案)

2023年小升初语法总复习（二）现在进行时1.现在进行时的定义：表示现在正在进行或发生的动作，也可表示当前一段时间内的活动或现阶段正在进行的动作。

句中一般含有now, look, listen等词。

2.现在进行时的句型结构：（1）肯定句：主语+be动词+现在分词+其他.如：Tom is reading newspapers in the living room.汤姆正在客厅里看报纸。

（2）否定句：主语+be动词+not+现在分词+其他.如：Tom is not reading newspapers in the living room.汤姆没有在客厅里看报纸。

（3）一般疑问句：Be动词+主语+其他?（be动词提到句首）如：Is Tom reading newspapers in the living room?汤姆正在客厅里看报纸吗？（4）特殊疑问句：特殊疑问词+一般疑问句?【注意】当画线部分包含谓语动词时，用特殊疑问词代替画线部分放到句首，原画线处应加上doing。

如：Tom is reading newspapers in the living room.（对画线部分提问）What is Tom doing in the living room?3.动词现在分词的变化规则：（1）一般情况下，在词尾直接加-ing。

如：cook-cooking, look-looking, listen-listening。

（2）以不发音的e结尾的单词，去e加-ing。

如：make-making, taste-tasting。

（3）以重读闭音节结尾，且词尾只有一个辅音字母，则双写这个辅音字母，再加-ing。

如：run-running, stop-stopping, put-putting。

【即时演练】一、单项选择。

( )1.My brother his car in the garden now.A.washesB.is washingC.washed( )2.—Can Peter play games with us, Mrs Frank?—No. He a shower at this moment.A.is takingB.takesC.took( )3.Tom often swimming. But now he football.A.go; is playingB.goes; playsC.goes; is playing ( )4.—Alice, don’t play the guitar! I on the phone.—Oh, sorry, Mum.A.talkingB.talkC.am taking ( )5.Shh! My sister now.A.sleepsB.is sleepingC.sleep( )6.Listen! Mary an English song in the classroom.A.is singingB.singC.sings二、用所给单词的适当形式填空。

苏州某校牛津译林六年级英语下学期知识点预习+测试卷及答案

六年级下学期知识点预习【重点语法：一般过去时和一般将来时】一般过去时一．时态含义：表示过去某个时间发生的动作。

二．时态标志：yesterday 昨天, last week/year…上周/去年…(last 上一个)，just now 刚才，this morning/ afternoon，…ago等四种时间状语①yesterday 及相关短语。

例如：yesterday morning/afternoon/evening 昨天上午/下午/晚上②“last+ 时间状语”构成的短语。

例如：last night/month/spring/year 昨晚/上个月/去年春天/去年③“一段时间+ago”组成的短语。

例如：three days ago 三天以前four years ago 四年以前④“介词+ 时间名词”组成的短语。

例如：in 1999 在1999 年on the morning of December 25th 在12 月25 号早上三．动词过去式动词在过去时态中，要由原形变化成为过去式，其变化规则为以下几种(1)be 动词am / is--was are--were(2)直接在动词后面加ed laugh--laughed point--pointed(3)以不发音的e 结尾的加d like--liked live--lived(4)以辅音+y 结尾的try--tried cry--cried要去掉y 改成i 加ed carry--carried(5)以元音+y 结尾的加ed play--played stay--stayed(6)有些动词要双写最后一个字母，再加ed stop—stopped jog—jogged(7)不规则变化(为过去时态中变化的难点，也是考试的重点)原形过去式原形过去式原形过去式do did go went say saidtell told can could get got have had give gave see saw become became fly flew bring brought eat ate take took find found lose lost stop stopped sing sang make made run ran swim swam hold held come came catch caught wear wore read read draw drew write wrote buy bought mean meant drink drank smell smelt keep keptput put throw threw slip slipped feel felt cut cut drive drove四．结构1.肯定句：主语+动词过去式2.一般疑问句：（1）句中含有be 动词，将be 动词提到句首，Was/Were +主语+……？Yes,…was/ were. / No, …wasn’t/weren’t.（2）句中无be 动词，在句首加Did，动词变原形，Did+主语+动词原形……？Yes,…did. / No, …didn’t.3.否定句的修改方法（1）句中含有be 动词，直接在be 动词后面加not，主语+wasn’t/weren’t…（2）句中无be 动词，在动词前加didn’t，动词变原形，主语+ didn’t+动词原形4.特殊疑问句：What did+主语+do?。