一、时态概述 时态 一般进行: be+Ving完成 Have/has+Ved 现在一般现在时work(works)现在进行时 am,is,are+working现在完成时 have,has worked 过去一般过去时worked过去进行时 was,were+working过去完成时 had worked 将来一般将来时will(shall)work将来进行时 will(shall)+be+working将来完成时 Will(shall) have worked 过去 将来过去将来时would(should)work 例题: 1)Months ago we sailed ten thousand miles across this open sea, which ____the Pacific, and we met no storms.(2005辽宁) A. was calledB. is called C. had been calledD. has been called 2)—Your job ____open for your return. —Thanks .(2006北京) A. will be kept B. will keep C. had kept D. had been kept 3)Since I won the big prize ,my telephone hasn’t stopped ringing .People ____to ask how I am going to spend the money.(2005湖南) A. phone B. will phone C. were phoning D. are phoning 4)The country life he was used to _____greatly since 1992。(2005山东) A. change B. has changed C. changing D. have changed 5)John, a friend of mine ,who got married only last week , spent $3,000 more than he ____for the wedding .(2006) A. will plan B. has planned C. would plan D. had planned 二、时态综述及特殊用法 一)常用一般现在时的情况: 1.以Here或There开头的句子,说明正在发生的动作,谓语动词不用现在进行时,而用一般现在时。如: Here comes the bus! There goes the bell! 2.既定的时间如生日、日历、课时安排、交通时刻表等,通常用一般现在时表示将来动作。如:The meeting starts at five o'clock. The train leaves at three this afternoon. 3.在see to it,make sure,make certain,be sure,look out,take care等之后的从句要用一般现在(过去、现在完成)时代替一般将来(过去将来、将来完成)时。如: You must make sure the door is closed before you leave the lab. See to it that everything is OK. 4.在宾语从句中,表示客观事实或真理,一律用一般现在时。如: The teacher taught us yesterday that the moon circles the earth. Somebody told me that you are a writer. 5.在由as soon as,when,before,after,till等引导的时间状语从句和由if,unless,as long as,in case等引导的条件状语从句或在方式、让步状语从句中,常用一般现在时代替将来时,但主句用一般将来时。如: If you come this afternoon,We'll have a meeting. When you meet him,tell him to come to my place. 二)常用一般过去时的情况: 1.表示说话人始料未及的事情,用一般过去时。如: Oh! I didn't know you were in Shanghai. How long have you been there? 2.在wish,would rather的宾语从句中和在as if引导的状语从句中,以及在It is time that…的定语从句中,谓语动词用一般过去时说明现在的事情。如: It's time you had a holiday. He looks as if he were young. 3.用表示意愿及精神状态的动词,反映的是说话者探询的态度时,动词用一般过去时表示一般现在时,显得更加有礼貌。如: I didn't know you were here.(我不知道你在这里,were实际上指现在) I wondered if you could help me. 4.在含有hardly/scarcely…when,no sooner…than结构的句子中,主句用过去完成时,从句用一般过去时。(注意:主句一般倒装)如: Hardly had I entered the room,when I heard a loud noise. No sooner had he reached the door than he came back. 三)常用现在进行时的情况: 1.若句中带有always,all the time,forever,constantly等词或短语,用进行时表示一个频繁发生的动作,表示说话人赞赏或厌恶等感情。如: You are always forgetting the important things. He is constantly leaving his things behind. 2.某些词,如come,go,leave,arrive,start等可用现在进行时表示将来。 He is leaving tomorrow. The visitors are arriving in a few minutes. 四)常用过去进行时的情况: 1.表示故事发生的背景。如: One day Jones was walking along the street. It was snowing as they made their way to the front. 2.与always,forever,constantly,continually,frequently等词连用,表示过去经常发生的行为,往往带有感情色彩。如: My brother was always losing his key. They were frequently quarrelling. 五)常用现在完成时的情况: 1.被the first time,a few times,again and again等表示次数或重复的状语修饰时,句中常用现在完成时。如: This is the third time we have made improvements in that equipment. 2.定语从句的先行词是最高级形式或被最高级形容词修饰时,句中常用现在完成时。如: Scientists have found almost all metals are good conductors,the best of which is silver. 3.在某些时间状语从句和条件状语从句中,用现在完成时表示将来完成的动作。如: I'll go to your home when I have finished my homework. If it has stoppted snowing in the morning,we'll go to the park. 六)常用过去完成时的情况: 1.某些动词的过去完成时表示原先计划或打算做而没做的事情。常见的动词有mean,plan,think,suppose,want,intend等。如: We had hoped that you would be able to visit us. I had intended to make a cake,but I ran out of time. 2.在条件状语从句中以及which或I'd rather后的宾语从句中,常用过去完成时表示与过去事实相反的虚拟语气。如: If you only had worked with great care! I would rather you had told her the truth. 七)常用一般将来时的情况: 1.表示一种倾向、固有特性或说话人推测的意见。如: I think it will rain tomorrow. Birds will build nests. 2.在某些条件状语从句、时间状语从句中。如: We shall go unless it rains. He'll help you if you ask him. 说明:有时用be about to+动词原形或be to +动词原形或be going to +动词原形表示将来时。如: The meeting is going to start at nine. Tell her she is not to be back late. The film is about to begin.
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