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＞＞＞用动词的适当形式填空。1. While we _________ (wait) for the ..
用动词的适当形式填空。
1. While we _________ (wait) for the bus, a girl _________ (run) up to us. 2. I _________ (telephone) a friend when Bob _________ (come) in.3. Jim _________ (jump) on the bus as it _________ (move) away. 4. We _________ (test) the new machine when the electricity _________ (go) off. 5. She _________ (not want) to stay in bed while the others _________ (all, work) in the fields. 6. While mother ________ (put) Cathy to bed, the door bell ________ (ring).7. As I _________ (walk) in the park, it _________ (begin) to rain.8. Even when she _________ (be) a child she _________ (already, think) of becoming a ballerina&& &(芭蕾舞演员). 9. It was quite late at night. George _________ (read) and Amy _________ (play) her needle when &&& they _________ (hear) a knock at the door. 10. There _________ (be) a group round the fire when they _________ (reach) it. An old woman &&&&&& _________ (sit) on the gr two small children _________ (lie) a&&&&&&&donkey _________ (bend) his head over a tall girl.
题型：填空题难度：中档来源：期中题
1. ran& 2. came& 3. was moving& 4. went 5. didn' were all working& 6. rang &7. began& 8. was already thinking 9. heard &10. was bending
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据魔方格专家权威分析，试题“用动词的适当形式填空。1. While we _________ (wait) for the ..”主要考查你对&&实义动词的过去式，系动词，一般过去时，过去进行时&&等考点的理解。关于这些考点的“档案”如下：
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因为篇幅有限，只列出部分考点，详细请访问。
实义动词的过去式系动词一般过去时过去进行时
表示一般过去式的动词通常用动词的过去式形式来表示，而动词的过去式是在动词原形的基础上变化的。动词的过去式可分为规则动词和不规则动词。实意动词过去式变化规则:
注:以l结尾的动词，尾音节重读时，双写l,如control—尾音节不重读时，双不双写都可以，如travel—traveled/traveled。特例：picnic—picnicked，另外还有很多动词的过去式是不合乎上述规则的，常见的有:常用的有：begin—began,&&&&&&&&&bring—brought,&&&&&&& come—came,&&&&&& &draw—drew, drink—drank,&&&&&&&&& drive—drove,&&&&&&&&& eat—ate,&&&&&&&&&&&&& & feel—felt, get—got,&&&&&&&&&&&&&& && give—gave,&&&&&&&&&&&&& go—went,&&&&&&&&&&&& grow—grew,have (has)—had,&&&&& keep—kept,&&&&&&&&&&& know—knew,&&&&&& leave—left,&& make—made,&&&&&&&&& &read—read,&&&&&&&&&&& run—ran,&&&&&&&&&&&&&& say—said, see—saw,&&&&&&&&&&&&&& &sit—sat几个特殊实意动词过去式用法:a.beat的过去式与原形同形：&&&beat（打击）&beat（过去式）&beaten（过去分词）&&&b.lie有规则变化和不规则变化两种，含义不同&&&lie，lied,&lied（说谎）&&&lay,&lain（躺，位于）&&&
c.hang有规则变化和不规则变化两种，含义不同&&&hang，hanged,&hanged（处绞刑）&&&hung,&hung(挂，吊)&&&
d.&welcome（欢迎）一词是规则动词，不可误用为不规则动词&&&welcome&welcomed,&welcomed（正）&&&welcome,&welcome（误）&&&
e.不要将不规则动词误用为规则动词&&&hit（打）&hit,&hit（正）&&&hitted,&hitted（误）&实意动词过去式用法基本句式： 1.主+V-ed+宾+其它。。。（肯定句） 2.主+didn't+V原+宾+其它。。。 3.Did+主+V原+宾+其它。。。+？ 4.回答：Yes,主语代词+did\No,主语代词+didin't. 5.特殊疑问句：特殊疑问词+一般疑问句。实义动词的一般过去时态:肯定句要使用动词的过去式，否定句和疑问句要使用助动词do和 does 的过去式 did.肯定句为：主语+动词过去式+宾语&&& 如：I went home at nine o'clock yesterday.否定句：主语+didn't +动词原形+宾语 　如：I didn't go home yesterday.& He didn't tell me about you.疑问句：一般疑问句：Did +主语+动词原形+宾语如：Did you go home yesterday?　　Did you study in the school?肯定回答： Yes, I did.&& 　否定回答：No, I didn't.特殊疑问句：特殊疑问词+did +主语+动词原型+宾语When did you finish your homework last night?&&&& 　What did you do the day before yesterday?系动词：亦称连系动词。作为系动词，它本身有词义，但不能单独用作谓语，后边必须跟表语，亦称补语（形容词），构成系表结构说明主语的状况、性质、特征等情况。系动词的分类：1）状态系动词用来表示主语状态，只有be一词，例如：He is a teacher. 他是一名教师。（is与补足语一起说明主语的身份。）2）持续系动词用来表示主语继续或保持一种状况或态度，主要有keep, rest, remain, stay, lie, stand, 例如：He always kept silent at meeting. 他开会时总保持沉默。This matter rests a mystery. 此事仍是一个谜。3）表像系动词用来表示"看起来像"这一概念，主要有seem, appear, look, 例如：He looks tired. 他看起来很累。He seems (to be) very sad. 他看起来很伤心。4）感官系动词感官系动词主要有feel, smell, sound, taste, 例如：This kind of cloth feels very soft.这种布手感很软。This flower smells very sweet.这朵花闻起来很香。5）变化系动词这些系动词表示主语变成什么样，变化系动词主要有become, grow, turn, fall, get, go, come, run.例如：He became mad after that. 自那之后，他疯了。She grew rich within a short time. 她没多长时间就富了。6）终止系动词表示主语已终止动作，主要有prove, turn out, 表达"证实"，"变成"之意，例如：The rumor proved false. 这谣言证实有假。The search proved difficult. 搜查证实很难。His plan turned out a success. 他的计划终于成功了。（turn out表终止性结果）系动词使用的注意事项：系动词本身有一定的词义，不能单独作，后面必须与连用。复习时，必须注意以下几个问题：
1.be是最重要的系动词，不同，be的形式也不同，且有的变化。
a通常表示的特征、状态和身份等，后面接形容词、、名词、短语、、v-ing、及作表语。
b特别要注意“由be+”所构成的与“由be+过去分词”所构成的的区别。
c前者侧重于表示的特征或所处的状态，通常没有由by引导的短语。
如：The door was closed.
后者侧重于强调主语是所示动作的承受者，表示动作；句中可以用由by引导的。如：The door was closed by me.
d还要注意“由be+ V-ing所构成的与“由be+ V-ing”所构成的进行时态的区别。
前者侧重于说明主语具有的特征或存在的状态，也可说明主语是什么。如：My job is teaching English.
后者侧重于强调主语正在做某事。如：Mr Wang is reading an evening paper now.
2. 要注意由转化成的系动词。
a表示人体感官的系动词有sound，taste，look，feel，smell等，后面接形容词；
b表示主语从一种状态转变到另一种状态的系动词有become，get，go，turn，run，grow，come，fall，prove等，后面接形容词、名词或 to be+形容词，become后面接单数名词时，名词前要用，turn后面接单数名词时，名词前不用；
c表示主语继续或保持某种身份、或的系动词有continue，keep，remain，stay，stand lie，rest，stay等，后面接表示状态的形容词；
d表示判断的系动词有seem和appear，后面接形容词、to be+名词或形容词、that-clause、不定式等。
3. 要注意系动词的固定搭配。常见的有come true, fall asleep, fall ill, go bad, come right, run wild, wear thin, turn nasty等。
4.要特别注意某些动词既可以做系动词，又可以做实意动词的用法。
系动词部分主要注意：其后要求接形容词，而不是做。遇到这种情况，只能先根据其意思判断清楚到底是前者还是后者，然后再对后面的词性和词义做出正确判断和选择。以taste一词为例：
The newly-invented soft drinking tastes quite unique.（这种新研制的软饮料尝起来挺独特的。注意：在这句话里，taste做系动词，不能使用进行时，后面接。）
The chef is tasting the fish carefully.（厨师长正在品尝这道鱼。注意：在这句话中，taste做，可以使用，并且后面接副词做。）系动词用法点拨：1．系动词的进行时态应分情况讨论。一般地说，状态系动词无进行时态，而动态系动词有进行时态。但是在某些情况下，状态系动词也有进行时态，表示两个用途：一是表示一种短暂的、反常的状态。如：He is being kind.（一时而不能持久的性质）他装出和蔼可亲的样子。二是表示一种探询口气，使语言客气、生动、亲切。例如：I hope you are keeping well.（语气委婉）我希望你保持健康。Are you feeling any better?（语气亲切）你感觉好了些吗？试比较：Your hand feels cold.（无意识的静态性质。）你的手摸起来冰凉。不可以说：Your hand is feeling cold.(×)但可以说：The doctor is feeling her pulse.（有意识的动态动作）医生正在给她拿脉。The soup tastes good.（静态性质，无进行时）这汤的味道不错。The cook is tasting the soup.（动态动作，有进行时）厨师在尝汤的味道。
总之，系动词有无进行时态应随系动词的意义或其语境变化而变化。我们在概述某一动词的进行时态时，不能笼统地说feel，smell无进行时，应指出其意义及其语用环境。例如smell的用法可见一斑。①smell作“嗅觉”的能力时，虽是实义动词，但指的是一种性质的存在状态不能用于进行时态，常与can, could, be able to连用。The camels can smell the water a mile off.骆驼能嗅出一英里外有水。②指“嗅、闻”的动作时，实义动词，可用于进行时态。The girl is smelling the flower.这姑娘正在闻那朵花。③smell指“含有……气味”，“发出……气味”等事物性质时，半系动词，无进行时态。The dinner smells good.这饭菜闻起来真香。
2．系动词的时态与形容词的比较级连用的问题。某些含有变化意义的动态系动词如get, become, grow, turn等的进行时态可与形容词的比较级连用，表示渐进过程，其意思是“越来越……”。例如：He is growing taller and taller.他长得越来越高了。Our life is getting better and better.我们的生活是越来越好了。The things are getting worse.情况是越来越糟了。
3．所有半系动词的被动语态要分情况讨论。英语中某动词在作系动词用时，无被动语态，而作实义动词用时，才有被动语态，二者不可混为一谈。例如：不能说：The apple is tasted good.（因为taste此时是系动词，“尝起来”之意，指的是苹果的性质，无被动语态）但我们可以说：The apple is tasted by me.这苹果被我尝了一下。（taste此时指“尝一尝”这一动作，有被动语态）因此，在平时的英语教学和学习之 ，要有意注意半系动词在具体的语言环境中到底是系动词用法还是实义动词用法，要注意区分、识别。
4．瞬间动态系动词能否与时间段连用的问题英语中某些表示瞬间意义的系动词不能与“for+时间段，since+时间点，how long until+时间,by + 时间，so far”等直接连用。例如：①不能说：He has become a teacher for 2 years.应改为：He has been a teacher for 2 years.②不能说：He has turned writer since 3 years ago.应改为：He has been a writer since 3 years ago.或It is three years since he turned writer.③不能说：He got angry until his child came back home.应改为：He didn’t get angry until his child came back home.
5．系动词能接几种表语（从句）系动词除了接adj.\n.\prep.短语，某些adv.以外，还可接以下几种表语形式：①能接as if/as though表语从句的系动词有：look（看起来），smell（闻起来），sound（听起来），feel（觉得）；appear（显得），seem（似乎）。例如：It looks as if we are going to have snow.看样子天要下雪了。He looked as if he had just stepped out of my book of fairy tales.他看来好像刚从我的童话故事中走出来似的。She seemed as if (though) she couldn’t understand why Laura was there.看来她好像不能理解为什么劳拉呆在那儿。It sounds to me as though there’s a tap running somewhere.我好像听到某处水龙头流水的声音。She felt as if her head were splitting.她仿佛觉得她的头要裂开了。The river appeared as if enveloped in smog.那条河好像笼罩在烟雾之中。It seems as if it were spring already.好像已是春天了。②可用于“It+系动词+that从句”结构的有：seem, appear, 不可用be, look。如：It seemed that he had made some serious mistakes in his work.好像他在工作中犯了严重错误。It appeared that he was talking to himself.好像他在自言自语。③能用不定式作表语的系动词有：be, seem, get, look, appear, prove, grow.Her job is to look after the children.她的工作是照料孩子们。He seems not to look after the children.他好像不是她的父亲。She looks to be a young girl of twenty year-old.她看起来像是一个20岁的年轻姑娘。He didn’t appear to dislike it.看不出他憎恨此事。My advice proved to be wrong.我的建议证明是错误的。He will grow to like this work gradually.他会逐渐喜欢这个工作的。④能与there连用的系动词有：be, appear, seem.There appeared to be only one room.那儿好像只有一个房间。There seems(to be)no need to go.似乎没有必要走。
6．能用两种否定形式的系动词有两个：seem, appear.举例说明：It doesn’t seem that we can get our money back.= It seems that we can’t get our money back.He seems not to be her father.= He doesn’t seem to be her father.The baby doesn’t appear to be awake.= The baby appears not to be awake.
7．后接作表语的过去分词可构成系表结构能构成系表结构的系动词通常有两个：第一个是常见的be(is, am, was等)；第二个是get，口语中常用。当二者作系动词用时，它们均表示一种存在状态，而不表示被动动作；当二者作助动词用时，后接作谓语的过去分词构成被动语态。Be + P.P常可以用get + P.P.来代替，但是并不是be系动词总是可以用get来代替。Get + P.P.系表结构常用于以下两种情况：1）表示偶然的、突发性的、意想不到的被动动作的结果或状态。Last night I got caught in the downpour.昨夜我被雨淋了（表示意想不到）The new car got scratched.新车给刮坏了。（表突发性）2）表示对自身所作的事。如get dressed, get lost等。John got injured while playing football last Saturday.约翰上周星期六踢足球时受了伤。They got married last month.他们上个月结婚了。另外，要注意区分系表结构与被动语态结构的用法。一般过去时:表示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；过去主语所具备的能力和性格。基本结构：主语+动词过去式+其他；否定形式①was/were+②在行为动词前加didn't，同时还原行为动词；一般疑问句Did+主语+do+其他。一般过去时句法结构：肯定形式主语+动词过去式+其他例句：She often came to help us in those days.否定形式①was/were+not；②在行为动词前加didn't，同时还原行为动词例句：I didn't know you like coffee一般疑问句①Did+主语+do+其他？ ②Was\Were+主语+表语?例句：Did I do that?用表格整理如下：
记忆口诀：一般过去时并不难，过去动作、状态记心间。动词要用过去式，时间状语句末站。否定句很简单，didn't 站在动原前，其它部分不要变。一般疑问句也好变，did放在句子前，主语、动原、其它部分依次站。特殊疑问句也简单，疑问词加一般疑问句记心间。最后一条请注意，动词过去式要牢记！一般过去时中动词过去式变化规则：
过去式和过去分词
lookedtalked
以不发音字母e结尾
likearrive
likedarrived
以“辅以字母+y”结尾
变y为i，再加ed
fliedstudied
以重读闭音节结尾，且末尾只有一个辅音字母
双写词尾+ed
stoppedplanned&结构句型:1．一般句子I watched TV last night.2．一般疑问句Did you watch TV last night？3．there be 句型There was an apple on the table last night.Was there an apple on the table last night一般过去时注意事项：1.注意主句与从句中时态的一致性如果主句用了过去时，从句中一般也要用过去式，或者过去进行时、过去完成时等。例如：He believed that he was right. 他相信自己是对的。I didn’t know you were here. 我不知道你在这儿。I thought they were with you. 我以为他们和你在一起。2.在口语中， 一般过去时并不一定指真正的过去，而只是表示一种礼貌性语气。例如：I wondered (wonder) if you could do me a favor. 不知你可否帮我一个忙。I wanted (want) to ask if I could borrow your car. 我想问问可否借用你的车。I hoped (hope) you could (can) give me some advice. 我希望你能帮我出点主意。Did (Do) you want to see me? 你想见我吗？3.used to used to 是一个词组，表示“过去曾经是……而现在已经停止了”的动作。例如： I used to work fourteen hours a day. 我过去常常一天干十四个小时。(而现在不这样了)I used to take a walk in the morning.我过去是在早晨散步。(而现在不在早晨散步了)一般过去式用法：（1）一般过去时表示在过去某个特定时间发生，也可以表示过去习惯性、经常性的动作。一般过去时不强调动作对现在的影响，只说明过去的事情。句式：主语+动词过去式+宾语+其它I had a word with Julia this morning.今天早晨，我跟茱莉雅说了几句话。He smoked many cigarettes a day until he gave up. 他没有戒烟的那阵子，抽烟抽得可凶了。（2） 一般过去时常与表示过去的时间状语或从句连用，如：yesterday,last week ,in& the& past ,in 1993,at that time,once,during the war,before,a few days ago,when 等等.（句子中谓语动词是用一般过去时还是用现在完成时，取决于动作是否对现在有影响）。Have you had your lunch? 你吃过午饭了吗？（你现在不饿吗？）Yes,I have. 是的，我已经吃过了。（已经吃饱了，不想再吃了。）When did you have it? 你是什么时候吃的？（关心的是吃的动作发生在何时。）I had it about ten minutes ago. 我大约是十分钟以前吃的。）Used to do something 表示过去常做而现在已经停止了的习惯动作。I used to work fourteen hours a day. 我过去常常一天干十四个小时。I ate it at 6：45。我在六点四十五分吃了。（3）带有确定的过去时间状语时，要用过去时。如：yesterday（昨天）、two days ago…（两天前…… ）、last year…（去年…）、the other day（前几天）、once upon a time（很久以前）、 just now（刚才）、in the old days（过去的日子里）、before liberation（解放前…）、 When I was 8 years old（当我八岁时…）、at+一个时间点Did you have a party the other day？前几天，你们开了晚会了吗？Lei Feng was a good soldier.雷锋是个好战士。注：在谈到已死去的人的情况时，多用过去时。（4）表示过去连续发生的动作时，要用过去时。这种情况下，往往没有表示过去的时间状语，而通过上下文来表示。The boy opened his eyes for a moment，looked at the captain，and then died.那男孩把眼睛张开了一会儿，看看船长，然后就去世了。（5）表示过去一段时间内经常或反复的动作。常与always，never等连用。Mrs. Peter always carried an umbrella.彼得太太过去老是带着一把伞。（只是说明她过去的动作，不表明她现在是否常带着伞。）比较：Mrs. Peter always carries an umbrella.彼得太太老是带着伞。（说明这是她的习惯，表明她现在仍然还习惯总带着一把伞）Mrs. Peter is always carrying an umbrella.彼得太太 总是带着一把伞。（表示说话者对这一动作或行为厌烦）I never drank wine.我以前从不喝酒。（不涉及到现在，不说明现在是否喝酒）（6）如果强调已经终止的习惯时要用 used to do（过去常常做，而现在不那样做了）He used to drink alcohol.他过去喝酒。（意味着他现在不喝酒了。喝酒这个动作终止了）I used to take a walk in the morning.我过去是在早晨散步。（意味着现在不在早晨散步了）比较：I took a walk in the morning.我曾经在早晨散过步。（只是说明过去这一动作）（7）有些句子，虽然没有表示过去确定时间的状语，但实际上是指过去发生的动作或存在的状态的话，也要用过去时。I didn''t know you were in Paris.我不知道你在巴黎。（因为在说话时，我已经知道你在巴黎了。这句话指的是说话之前，所以只能用过去时表示。实际上，这句话暗指：But now I know you are here.）I thought you were ill.我以为你病了呢。（这句话应是在说话之前，我以为你病了。但是现在我知道你没病）一般过去时三变技巧:一变：肯定句变为否定句技巧1.当句中含有情态动词或助动词could，would，should等时，可直接在其后面加not构成否定句。例如：I could get you a concert ticket. → I could not / couldn't get you a concert ticket.技巧2.当句中含有系动词was，were 时，可直接在其后加not构成否定句。例如：I was on the Internet when you called me. → I was not / wasn't on the Internet when you called me. 技巧3.当句中谓语是除情态动词、助动词、系动词was, were以外的动词时，在该动词之前加did not / didn't，动词还原，构成否定句。例如：The famous singer sang some Chinese songs. → The famous singer did not / didn't sing any Chinese songs.二变：陈述句变为一般疑问句技巧1.移动词语的位置。将was，were, could，would，should等移到句首。例如：He could pack his things himself. → Could he pack his things himself?技巧2.添加助动词did。谓语是除情态动词、助动词、系动词was, were以外的动词时，在主语之前加did，动词还原。例如：Mr Li looked very old. → Did Mr Li look very old?三变：陈述句变为特殊疑问句技巧1.确定疑问词：人who / whom，物what，地点where，时间when / what time，原因why，频率how often，长度how long，距离how far等等。例如：They gave the concert last night. → When did they give the concert?技巧2.辨认结构形式：疑问词+情态动词/助动词/ was / were / did +主语+...? 例如：The accident happened near the station. → Where did the accident happen?过去进行时：表示在过去某一时刻或某一段时间内进行或发生的动作。其形式为was/were+V-ing。常与表示过去的时间状语连用，如：last night，last Saturday等；或者与when,while,as引导的过去时间状语连用。过去进行时的结构：1. 过去进行时由“主语+was/were + 现在分词”构成eg: We were having supper when the phone rang. 我们正在吃晚饭时电话响了。2. 过去进行时的否定式由“主语+was/were not +现在分词”构成eg: This time yesterday Jack was not watching TV. He was repairing his bike. 昨天这个时候，杰克不是在看电视，而是在修理自行车。3. 过去进行时的疑问式由“was/were +主语+ 现在分词”组成eg: Were you playing basketball at four yesterday afternoon? 你们在干什么昨天下午的时间啊& 回答我啊?过去进行时和一般过去时的区别：一、二者概念理解一般过去时叙述旧事，过去进行时描述背景。A、一般过去时1.过去状态、动作或事件 He went to Beijing the other day.（带具体时间）2.过去的习惯a would ,used to与过去时 would 表间断性不规则的习惯，常带频率时间 used to 表一贯性有规律的习惯They used to meet and would sometimes exchange one or two words. He smoked a lot two years ago. （过去行为）bWould 用于文中不用于句首，只表过去习惯。 Used to 表今昔对比的含义，叙述习惯动作可与would 换用。When he was a boy , he would often go there . （叙述过去） She isn't what she used to be. (今昔对比)c 表示状态时一般只用used to Tom used to be fat /There used to stand a tree there. (状态)dwas (were) used to +ving表示“合适于，适应于…..” He used to work at night . (“习惯”表经常) He was used to working at night. (习惯表适应)3.过去的经历，平行动作，依此事件用一般过去时。 He sat there and listened to the radio.(依此发生)4.客气委婉的语气，用于情态动词，助动词和want , wonder , hope 等 How did you like the film? / Could you help me?
B. 过去进行时1.在过去某阶段或某一时刻正在发生 What were you doing at 8:30 last night? (过去某时刻正在发生)2.性动词用过去进行时表示按计划、打算 During that time he was going with us.(表示打算)3.lways ,often ,usually 等连用表喜爱，讨厌等感情色彩。 He was always Changing his mind.
二、区别A. 进行时表某一行为的“片断”一般时表示行为的“整体”和存在的状态。 I was reading the book at that time. (未读完，“读”的片段) I read the book yesterday. (已读完，表整个“读”)B、一般持续时间状语多与进行时连用 It was raining all night.(优先用was raining ,rained 为持续动词，故也可使用) He was writing a letter the whole of afternoon. (短暂动词与持续时间连用，表反复，连续发生，不可用一般过去时)C、while 时间状语从句中用短暂动词时只能用进行时。 例：He broke a chair while he was jumping up and down.D、While 所在主从句动作大致持续相等时主从句一般都用进行时，但若是持续动词可都用一般过去时，两个动作一长一短时短的用一般时，长的用进行时。 I was cooking the dinner while he was playing the piano.(平行) I cooked the dinner while he played the piano. I saw him while I was walking to the station.过去进行时的基本用法:过去进行时的基本用法主要表示过去某一时间正在进行的动作。如：He fell asleep when he was reading. 他看书时睡着了。 　　 2. 用过去进行时表示现在主要是为了使语气委婉、客气。如：I was wondering if you could give me a lift. 我不知你能否让我搭一下车。 　　 【注】一般过去时也有类似用法，但比较而言，用过去进行时显得更客气，更不肯定。 　　 3. 过去进行时表示感情色彩与现在进行时相似，过去进行时也可表示满意、称赞、惊讶、&厌恶等感情色彩，也通常与 always, forever, continually等副词连用。如：They were always quarrelling. 他们老是吵架。 　　 4. 动词be的过去进行时动词be的进行时也可表示过去一时的表现或暂时的状态。 　　 比较：He was friendly. 他很友好。(指过去长期如此) 　　 && He was being friendly. 他当时显得很友好。(指当时一时的表现) 特殊用法1、当句子意思很清楚时，我们也可以把两个动词都换成一般过去时We listened carefully when the teacher read the text. 老师读课文时，我们都仔细地听着。2、表示按计划、安排过去将要发生的事。用于come,go,leave,start,arrive等表示位置转移的动词时，也可以用过去进行时表示过去将要发生的动作。如：He told me that he was going soon. 他告诉我他很快就要走了。3、表示故事发生的背景。It was snowing as the medical team made its way to the front. 那支医疗小组往前线行进时，天正下着雪。4、表示一个新的动作刚刚开始。过去进行时可用来引出一个新的动作，这种用法颇有点儿像镜头转换。Five minutes later,he stood in the doorway smoking a cigarette. 5分钟后，他已站在门口抽着烟。5、过去进行时还可和when结构遥相呼应，含有意外之意。I was walking in the street when someone called me. 我正在街上走时突然有人喊我。6、用来陈述原因或用作借口。She went to the doctor yesterday. She was having a lot of trouble with her heart.她昨天去看病了。她患了很严重的心脏病。7、与always,constantly等词连用，表示感情色彩。The girl was always changing her mind. 这女孩老是改变主意。
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