英語(yǔ)中時(shí)態(tài)特殊現(xiàn)象面面觀

字號(hào):

時(shí)態(tài)是英語(yǔ)中謂語(yǔ)動(dòng)詞所表示的動(dòng)作或情況發(fā)生時(shí)間的各種形式,是各級(jí)各類考試的必考內(nèi)容。隨著高考逐漸向能力立意的過度,對(duì)時(shí)態(tài)的考查已經(jīng)由單純的時(shí)態(tài)逐漸向時(shí)態(tài)中的特殊現(xiàn)象延伸。下面就舉例說(shuō)明英語(yǔ)中常見的幾種特殊時(shí)態(tài)現(xiàn)象。
     一、常用一般現(xiàn)在時(shí)的情況:
    1.以Here或There開頭的句子,說(shuō)明正在發(fā)生的動(dòng)作,謂語(yǔ)動(dòng)詞不用現(xiàn)在進(jìn)行時(shí),而用一般現(xiàn)在時(shí)。如:
    Here comes the bus!
    There goes the bell!
    2.既定的時(shí)間如生日、日歷、課時(shí)安排、交通時(shí)刻表等,通常用一般現(xiàn)在時(shí)表示將來(lái)動(dòng)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等之后的從句要用一般現(xiàn)在(過去、現(xiàn)在完成)時(shí)代替一般將來(lái)(過去將來(lái)、將來(lái)完成)時(shí)。如:
    You must make sure the door is closed before you leave the lab.
    See to it that everything is OK.
    4.在賓語(yǔ)從句中,表示客觀事實(shí)或真理,一律用一般現(xiàn)在時(shí)。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等引導(dǎo)的時(shí)間狀語(yǔ)從句和由if,unless,as long as,in case等引導(dǎo)的條件狀語(yǔ)從句或在方式、讓步狀語(yǔ)從句中,常用一般現(xiàn)在時(shí)代替將來(lái)時(shí),但主句用一般將來(lái)時(shí)。如:
    If you come this afternoon,We'll have a meeting.
    When you meet him,tell him to come to my place.
    二、常用一般過去時(shí)的情況:
    1.表示說(shuō)話人始料未及的事情,用一般過去時(shí)。如:
    Oh! I didn't know you were in Shanghai. How long have you been there?
    2.在wish,would rather的賓語(yǔ)從句中和在as if引導(dǎo)的狀語(yǔ)從句中,以及在It is time that…的定語(yǔ)從句中,謂語(yǔ)動(dòng)詞用一般過去時(shí)說(shuō)明現(xiàn)在的事情。如:
    It's time you had a holiday.
    He looks as if he were young.
    3.用表示意愿及精神狀態(tài)的動(dòng)詞,反映的是說(shuō)話者探詢的態(tài)度時(shí),動(dòng)詞用一般過去時(shí)表示一般現(xiàn)在時(shí),顯得更加有禮貌。如:
    I didn't know you were here.(我不知道你在這里,were實(shí)際上指現(xiàn)在)
    I wondered if you could help me.
    4.在含有hardly/scarcely…when,no sooner…than結(jié)構(gòu)的句子中,主句用過去完成時(shí),從句用一般過去時(shí)。(注意:主句一般倒裝)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、常用現(xiàn)在進(jìn)行時(shí)的情況:
    1.若句中帶有always,all the time,forever,constantly等詞或短語(yǔ),用進(jìn)行時(shí)表示一個(gè)頻繁發(fā)生的動(dòng)作,表示說(shuō)話人贊賞或厭惡等感情。如:
    You are always forgtting the important things.
    He is constantly leaving his things behind.
    2.某些詞,如come,go,leave,arrive,start等可用現(xiàn)在進(jìn)行時(shí)表示將來(lái)。
    He is leaving tomorrow.
    The visitors are arriving in a few minutes.  
     四、常用過去進(jìn)行時(shí)的情況:
    1.表示故事發(fā)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.與always,forever,constantly,continually,frequently等詞連用,表示過去經(jīng)常發(fā)生的行為,往往帶有感情色彩。如:
    My brother was always losing his key.
    They were frequently quarrelling.
    五、常用現(xiàn)在完成時(shí)的情況:
    1.被the first time,a few times,again and again等表示次數(shù)或重復(fù)的狀語(yǔ)修飾時(shí),句中常用現(xiàn)在完成時(shí)。如:
    This is the third time we have made improvements in that equipment.
    2.定語(yǔ)從句的先行詞是高級(jí)形式或被高級(jí)形容詞修飾時(shí),句中常用現(xiàn)在完成時(shí)。如:
    Scientists have found almost all metals are good conductors,the best of which is silver.
    3.在某些時(shí)間狀語(yǔ)從句和條件狀語(yǔ)從句中,用現(xiàn)在完成時(shí)表示將來(lái)完成的動(dòng)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、常用過去完成時(shí)的情況:
    1.某些動(dòng)詞的過去完成時(shí)表示原先計(jì)劃或打算做而沒做的事情。常見的動(dòng)詞有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.在條件狀語(yǔ)從句中以及which或I'd rather后的賓語(yǔ)從句中,常用過去完成時(shí)表示與過去事實(shí)相反的虛擬語(yǔ)氣。如:
    If you only had worked with great care!
    I would rather you had told her the truth.
    七、常用一般將來(lái)時(shí)的情況:
    1.表示一種傾向、固有特性或說(shuō)話人推測(cè)的意見。如:
    I think it will rain tomorrow.
    Birds will build nests.
    2.在某些條件狀語(yǔ)從句、時(shí)間狀語(yǔ)從句中。如:
    We shall go unless it rains.
    He'll help you if you ask him.
    說(shuō)明:有時(shí)用be about to+動(dòng)詞原形或be to +動(dòng)詞原形或be going to +動(dòng)詞原形表示將來(lái)時(shí)。如:
    The meeting is going to start at nine.
    Tell her she is not to be back late.
    The film is about to begin