初中英语时态讲解及练习含答案 .doc

时态1. 一般现在时l 形式：do does（单数第三人称）l 意义：一般现在时表示客观的、普遍性的真理以及经常性的事件。l 用法： A) 表示现在发生的动作、情况、状态和特征。 B) 经常性、习惯性动作。e.g.：He always helps others. （他总是帮助别人。） He often goes to the gym.C) 客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持 主句、从句时态一致。 e.g.: The sun rises in the east and sets in the west. Knowledge is power.l 这一用法场合一些表动作频率的时间副词连用： 1). 表示肯定的频率副词：always, frequently, usually, sometimes, generally, occasionally, often etc. 2). 表示否定的频率副词：never, seldom, rarely etc.Ø 这些副词的位置：在Be动词后，实义动词前。 e.g. He is always late.2. 一般过去时l 形式：didl 意义：一般过去时表示在过去的某一特定时间发生和结束的活动或情况。l 用法: A) 表示过去某个时间发生的动作或情况。 e.g.: I saw him in the library yesterday morning. （有特定的时间状语）Ø yesterday, yesterday evening, last night/month/spring/year, the night before last（前天晚上），three days/months/years ago, in 1999 etc.。 这些时间状语之前不用加介词。 B) 表示过去习惯性动作，一直持续或反复发生的动作，此时可与表示拼读的时间副词连用。 e.g.: I slept for eight hours last night. （表示在过去某一段时间内持续的动作，但这动作现在已经结束了）3. 一般将来时l 形式：will/shall do或be going to dol 意义：一般将来时表示在未来的某个时间将要发生的某个动作或状态。l 学明白一般将来时要理解的一下三个至关重要的概念： 1) 预测，表示说话人认为将来会发生某件事。 2) 事先计划：说话人在头脑里已经做出决定将来要做某件事。 3) 意愿：说话人既不是预计某事会发生，也不是预先经过考虑决定将做某事，而是在说话的时刻立即做出决断表明他将做某事。l 用法： A) 用来预测，表示预测，或说估计将来要发生某事，可用 will 或be going to。 e.g.: According to the weather report, it will be windy tomorrow. B) 表示“打算去.，要.”时，可用be going to do。 e.g.: This is just what I am going to say. C) 表示“将要、正要”时，可用be about to do。 强调近期内或马上要做的事。 e.g. Do not worry, I am about to make a close examination on you. （别担心，我马上就给你做一次仔细的检查。） D) "be to do"的5种用法： a) 表示“按计划、安排即将发生某事或打算做某事”。例：She is to be seen in the lab on Monday.（星期一你准会在实验室见到她。） b) 该做或不该做的事情（语气上接近于should, must, ought to, have to），表示一种命令、规劝性语气。 e.g.：You are to go to bed and keep quiet, kids. Our guests are arriving in less than 5 minutes.（孩子们，你们必须 上床睡觉，不准吵闹。我们的客人5分钟之内就要到了。） c) 能或不能发生的事情（接近can, may）例：How am I to pay such a debt?（我怎么可能还得起这么大的一笔债呢？） d) 不可避免将要发生的事情，后来将要发生的事情。 e.g.：I assure you that the matter _ as quickly as possible. Have a little patience.A. will be attended B. will be attended toC. is attended D. is attended towill be attended to关键的一点是：attend表示“处理，解决”时是不及物动词，必须与to连用。另外，从上下文看，事情显然尚未解决，所以应该用将来时的被动语态。答案是B。 e) 用于条件从句“如果想，设想”（接近if want to,或if should） e.g.：Greater efforts to increase agricultural production must be made if food shortage _ avoided.A is to be B can be C will be D has been答案是A. is to be。全句的意思是：“如果要避免食品短缺，就必须作出更大努力来增加农业产量。” Ø 表预测时，我们可以用will 或be going to。但两者还存在以下两点区别： 1) 用be going to 特别是意指根据目前的明显迹象来推断某件事将要发生。 will则只是表明说话人认为或相信某件事将要发生。 2) be going to 通常用来表示说话人与其所说的时间马上或在相当近的将来就要发生。而will所表示的动作发生的时间可近可远。 a. Look at those black clouds! It's going to rain. b. I feel terrible. I think I'm going to be sick. c. John is going to fall into that hole! d. Oh, my dear! They're going to bump against that tree! e. You look very pale. I am sure you are going to get sick. 一般时态练习一、用动词的适当形式填空1.Vegetarians(素食者) (not, eat)meat.2.An atheist(无神论者) (not, believe)in God.3.Constant dripping(滴水) (wear)away a stone.4.John (always, not, go)to school late. That is to say, he (sometimes, attend)school late. He (be, generally)a good student. He (be, always)ready to help others. 5.If it (rain)tomorrow, we'll have to put off our sports meet. 6.Look!Here (come)your boyfriend! 7.Mozart (write)more than 600 pieces of music. 8.I (be)very tired last night, so I (go)to bed early. 9. you (go)anywhere on Labor Day? 10.When I was young, I (want)to be a bus driver.答案：1.don't eat2.doesn't believe3.wears4.doesn't always go, sometimes attends, is generally, is always5.rainses7.wrote8.was,went9.Did,go10.wanted4. 现在进行时l 形式：be doing: am/is/are +doing.(是助动词，没有“是”的意思).l 意义：强调在现在这个时间点，某项活动正在发生。l 用法： A) 表示说话此刻正在进行。 e.g.: What program are you watching? I am studying English. B) 表示现阶段正在持续的动作。这是进行时态表示的是一个一般性的活动，在说话时刻这个动作并不一定正在发生。 e.g.: These days I am translating a book. C) 表示最近的将来一定的安排。通常含有“计划”、“安排做”之意。 e.g.: I am taking a makeup test tomorrow. D) 现在进行时常与always, forever, continually, constantly等连用，往往表示抱怨、厌烦、不合理或使人不愉快的事。 e.g.: Jack is always borrowing money and forgetting to pay you back. Jack常常借钱忘还。 How come Joe is always groaning about things? Joe为什么总是在抱怨？5. 过去进行时l 形式：be doing: was/were doingl 意义：强调在过去这个时间点，某项活动正在发生。l 用法： A) 用来描述一个过去特定的时刻正在发生的事情。 e.g.: I was discussing my thesis with my director at this time last night.（特定时刻） B) 过去进行时还常常和一般过去时配合使用。 此时，过去进行时通常表示一个历史较长的体现“背景”的动作或状态；而一般过去时则表示此“背景”下发生的，短暂的动作或状态。过去进行时动作先发生，一般过去时动作后发生。 e.g. I was telephoning Harry when she arrived.(在五打电话过程中，她到了。先telephone，后arrive) I telephoned Harry when she arrived.(她回来之后，我才打电话。先arrive,后telephone)6. 将来进行时l 形式： will be doingl 意义：强调在将来的某个具体时间正在发生的动作或事情。l 用法： A) 表示在将来某一特定时刻正在进行的活动。 e.g.: I'll be lying on a beach in Sanya this time tomorrow. Wait until seven o'clock so that they won't still be eating.进行时态练习一、用适当时态填空1. How fast you (drive)when the accident happened?2. I (walk) along the street when suddenly I (hear)footsteps behind me. Somebody (follow) me. I was frightened and I started to run.3. Why you (stare)at me like that?4. anybody (watch)TV or I (turn)it off?5. I (want)to lose weight. So this month I (not, eat)lunch. I am only eating fruits.6. Clint phoned me last night. He is on holiday in Qindao. He (have)a good time and (want)to come back until the end of this month.7. You (always, watch)TV. You should do something more active.二、用适当时态填空1. The television was on but nobody (watch) it.2. I (see)you in the park yesterday afternoon. You (sit)on the grass and (talk) with some people.3. Hurry up! Everybody (wait) for you.4. The water (boil). Can you turn it off?5. Water (boil)at 100 degrees Celsius.6. After three days of rain, I'm glad that the sun (shine)again today.7. Every morning the sun (shine) in my bedroom window and (wake)me up.8. I (ride)home yesterday when suddenly an old lady (walk)out into the road in front of me. I (go)quite fast but luckily I was able to stop in time and (not, hit)her.9. Look! There (go)our bus; we'll have to wait for the next one.10. It (rain)hard, but no one stopped working. 单选选择1. I'll go with you as soon as I my homework. A. will finish B. finish C. am finishing D. have finished2. He at 8 o'clock every morning. A. is going to work B. went to work C. goes to work D. will go to work3. When I see Jean in the street, she always at me. A. smiled B. has smiled C. was smiling D. smiles4. Look, here the famous player. A. comes B. came C. has come D. come5. The year four seasons. A. has been divided into B. is divided into C. has divided in D. was divided into6. Nobody likes her because she to carry favor with the boss. A. has always tried B. does always try C. always tries D. is always trying答案：一、1. were，driving2. was walking, heard. was following3. are staring4. Is, watching , 'll turn5. want, am not eating6. is having, doesn't want.7. are always watching.二、1. was watching 2. saw, were sitting, talking3. is waiting4. is boiling5. boils6. is shining7. shines, wakes8. was riding, walked ,was going, didn't hit9. goes10. was raining三、1. B2. C3. D4. A5. B6. D7. 现在完成时l 形式：have/has donel 意义：开始于过去的动作一直持续到现在，而且还可能继续持续下去。谓语动词一般为延续性动词。 (黑点表示现在和过去两个时间点；时间骰表示动作在延续；徐建投表示动作可能继续持续下去）l 用法： A)延续到现在的动作或状态： 特点：1) 谓语动词一般为延续性动词 2) 动作发生的时间是过去，但这一动作持续到现在，而且还可能继续持续下去。 3) 与这种用法的现在完成时态连用的时间状语通常是表示“一段时间”的时间状语，已说明某个动作或状态持续了多久。Ø 与现在完成时态搭配的时间状语： 1. since+时间点 e.g.: I've worked in this company since 1980. 2. for+时间段 e.g.: I've worked in this company for 3years. Great changes have taken place in Beijing for the past few years. 3. “到目前为止.” until now, up till now, up to now, so far, up until now e.g.: We have up until now failed to take any action to decide on a common language that would further communication between nations. 到目前为止，我们尚未采取任何行动来决定一门国际通用语言，以促进国际间的交流。 4. “在最近几世纪/年/月以来.” in the past few years, over the past few years, during the last three months, for the last few centuries, through centuries, throughout history. e.g.: Throughout history man has had to accept the fact that all living things must die, for the very nature of life includes death. 自古以来，人类就必须接受这样的事实：一切生命体最终都会消亡，因为生命的本质包含了死亡。 B) 过去发生但与现在仍有联系的动作或状态 表示在不确定的过去发生的某一动作对现在仍有影响。谓语动词一般为短暂性动词。这种完成时态是中国学生对难以理解的，也常常和一般过去时混淆不清。（图中黑点表示过去某一时刻发生的动作；虚线表示过去发生的动作对现在仍有影响） C) 到目前的一个时间段内重复发生的动作。 表示到目前为止的一个时间段内重复发生的动作。 （图中每一个黑点表示以此动作；虚线表示于现在有联系） e.g.: For more than eight years, scientists have argued over whether life exists on the planet Mars. 八十多年以来，科学家们一直就火星上是否有生命存在这一问题不断进行争论。8.过去完成时l 形式：had donel 意义：在过去某一时刻之前（即过去的过去）就已开始的动作。这一动作： 1)在该过去时刻仍然再继续，或在该过去时刻刚刚停止； 2)在该过去时刻之前的某一时刻停止的动作 3) 在该过去时刻之前的一段时间内重读的动作。l 用法： A) 如同现在完成时的第一种永达的过去完成时。开始于过去之前（即过去的过去）的动作或状态在过去这一时刻仍在持续。 e.g.: I had stayed in America for 2 years when he moved here.(move是过去的动作，stayed发生在moved之前，即过去的过去；在moved之后还将会继续stayed） B)如同现在完成时的第二种用法，表示开始于过去之前的动作倒过去这一时刻之前即已停止.过去完成时的动作通常是短暂动作。e.g.: She had made everything ready before I came.C）如同现在完成时的第三种用法，在过去之前开始的动作，在过去之前的一段时间内重复发生。 e.g.: I had written her 100 letters when she finally promised to marry me.9.将来完成时l 形式：will have donel 意义：是以“将来”作为“坐标时间”，来描述开始于将来之前（可能是过去，现在或将来）的动作持续到将来。l 用法： A) 延续到现在的动作或状态。 e.g. I will have taught English in New Oriental School for five years by the end of next month. B) 过去发生但与现在仍有联系的动作或状态。e.g.： We will have finished our exam by the end of next week.C) 在将来之前开始的动作，在将来之前的一段时间内重复发生。e.g.: By five o'clock this afternoon the spaceship will have traveled eleven times round the world.10.现在完成进行时l 形式：have/has been doingl 意义：强调动作的持续性，表示开始于过去的动作持续到现在，并且活动还没有结束，还将继续持续下去。e.g.: It began raining 2 hours ago and it's still raining. It has been raining for two hours. It began raining at 8 o'clock. Now it's still raining. It has been raining since 8 o'clock. It has been raining all day. B) 刚刚结束的动作。 表示开始于过去的动作持续到现在为止不在继续或表示不久前刚刚结束的动作。 C) 重复发生的动作。具体来说就是表示说话时刻以前的一段时间内重复发生的动作。 e.g.: Every Sunday they meet in the same bar. They've been going there for years.11.过去完成进行时l 形式：had been doingl 意义： A) 强调在过去的某一活动或时间之前一直在持续的一项活动。可能仍然持续下去。 e.g.: When I arrived in Inner Mongolia, it had been snowing for half a month. B）强调在故去的某一活动或时间之前一直在持续的一项活动。持续到过去这一活动或这一时间为止，或者是在过去这一时间之前刚刚结束。 e.g.: The police had been looking for the murder for 2 years before they caught him. He finally showed up at 9 o'clock. I had been waiting for him since 6 o'clock. C) 过去完成进行时可表示重复发生的动作。具体来说，就是表示过去某一活动或时间之前的一段时间内重复发生的动作。 e.g.: He had been gambling for 2 years before his wife found out.12.将来完成进行时l 形式：will have been doingl 意义：表示开始于将来某个时刻之前的动作持续到将来这一时刻，并可能继续持续下去。l 用法： A) 强调在将来的某一活动或时间之前一直在持续的一项活动。 e.g.： I'm retiring this fall. By then I'll have been teaching for 30 years. She will have been taking care of her blind husband for 20 years by then. B) 表示在将来某个时间之前经常重复的动作。 e.g.: I will have been attending Prof. Smith's lectures for half a year by next week.