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初中英语必考八大时态结构及用法详解(2)


    一般将来时
    标志:will / shall + 动词原形
    1. 表示将来发生的动作或存在的状态,通常与表示将来的时间状语连用(e.g. tomorrow, next week, in the future等)。如:
    We shall have a lot of rain next month.
    My husband will come back in a few days.
    2.  表示倾向性和习惯性:
    Fish will die without water.
    When it gets warmer, the snow will start to melt.
    3.  一般将来时的几种句式结构辨析:
    1) will / shall + 动词原形
    多用于表达主观愿望或必定会发生的事情(“将会如何”)
    *shall作助动词时一般只用于第一人称
    2) be going to + 动词原形
    表示即将发生或打算要做的事:
    It is going to rain.
    We are going to have a meeting today.
    3) be to + 动词原形
    表示按计划或安排即将要发生的动作:
    He is to visit Japan next year.
    We are to discuss the report on Monday.
    4)  be about to + 动词原形
    表示即将发生的动作,意为“马上要做某事”,后面一般不跟时间状语,如:
    The plane is about to start.
    Don’t worry. I am about to make a close examination on you.
    4
    现在进行时
    标志:be + 动词的现在分词
    1.  表示说话时正在进行的动作:
    She is writing a letter upstairs.
    Who are you waiting for?
    It is raining hard.
    2.  表示现阶段一直在进行的动作(说话时动作未必正在进行):
    I hear Mr. Green is writing another novel.
    3.  表示反复出现或习惯性的动作,往往包含说话者赞扬、责备、厌恶等情绪,通常与always, constantly, continually, forever等频度副词连用。如:
    John is forever asking silly questions like a stupid.
    He is always thinking of others first.
    4. 表示将来
    1)  表示按计划、安排将要发生的动作,仅适用于部分趋向动词(如go, come, leave, start, arrive等)。如:
    Uncle Wang is coming.
    They're leaving for Beijing.
    2)  在时间和条件状语从句中,现在进行时表示将来某时正在发生的事情。如:
    Please drop in when you are passing my way.
    If he is still sleeping, don’t wake him up.
    5
    过去进行时
    标志:was / were + 动词的现在分词
    1.  表示过去某一时刻或一段时间正在进行的动作,过去进行时中常用的时间状语有the whole morning, all day yesterday, from January to March last year等。如:
    I was having a talk with Lucy at that time.
    They were watching TV at home last night.
    2.  表示过去反复出现或习惯性的动作,往往包含说话者赞扬、责备、厌恶等情绪,通常与always, constantly, continually, forever等频度副词连用。如:
    My brother was always losing his keys.
    3.  表示按计划、安排过去某时刻将要发生的动作,仅适用于部分趋向动词(如go, come, leave, start, arrive等)。如:
    He said they were leaving for Beijing this afternoon.
    4.  过去进行时有一个主要用法就是描述一件事情发生的背景(一个长动作延续的时候,另一个短动作发生):
    Granny fell asleep when she was reading.
    It was raining when they left the station.
    6
    现在完成时
    标志:have / has + 动词的过去分词
    1. 表示一个过去发生并已完成的动作对现在产生影响或结果,强调的是现在的状况(表示“已完成”)。如:
    He has left the city. (结果:他目前不在这个城市)
    Someone has broken the window. (结果:窗户破了)
    2. 表示一个动作开始于过去,持续到现在,也可能还会继续持续下去(表示“未完成”)。
    I have been busy since last week.
    He has taught in our school for 30 years.
    I’ve finished half so far.
    注意 瞬间动词通常是不能用现在完成时表持续性的,但其否定结构则可以。如:
    She hasn’t seen you for ages.
    His father hasn’t touched beer for a whole week.
    3. 表示过去到现在为止反复发生的动作或多次出现的状态,常与表示频度的副词always, often, every day等连用。如:
    I have often heard that he is the cleverest person in that company.
    4. 在时间和条件状语从句中,现在完成时表示将来某时完成的动作。如:
    I’ll go to your home when I have finished my homework.
    If it has stopped snowing in the morning, we’ll go the park.
    5. 与现在完成时连用的常见词语
    能与现在完成时连用的词语很多,just, already, yet, before, never, ever, recently等,但常见的有:
    1) since 自从
    I have been there many times since the war.
    We haven’t seen each other since last week.
    We have been friends ever since.
    2) in / for / during the past/last … years 在过去/最近…中
    I’ve been ill for the past three weeks.
    Great changes have take place in the last ten years.
    I have been here (for) the last/past month.
    3) so far 到目前为止
    We haven’t had any trouble so far.
    So far the search for the missing middle-aged woman has been fruitless.
    4)  up to/until now 到现在为止
    Up to now he’s been quiet.
    Up to now, the work has been easy.
    I have heard nothing from him up till now.
    Up till now we have planted over 2000 trees.
    5)  It is/will be the first/second … time that … 这是第一/二…次…
    It’s the first time (that) I’ve been here.
    It will be the first time (that) I’ve spoken in public.
    It is the second time (that) I have met him today.
    6)  This is + 形容词最高级 + that … 这是最…
    This is the best film that I’ve (ever) seen.
    6. 现在完成时与一般过去时的区别
    1) 现在完成时强调对现在的影响和结果,与现在有联系;
    而一般过去时强调这个动作发生的时间是在过去,不涉及对现在的影响。如:
    I have seen this film. (我已经看过了这部电影)
    I saw this film yesterday. (我是昨天看的这部电影)
    2) 现在完成时常与模糊的时间状语连用(如for, since, so far, ever, never, just, yet, till/until, up to now, always等),或者干脆没有时间状语;
    而一般过去时常与具体的时间状语连用(如yesterday, last night, …ago, in 1980, in February等)。
    3) 现在完成时表示持续时一般使用延续性动词(如live, teach, work, know等);
    而一般过去时常使用瞬间动词(如begin, buy, die, marry等)。如:
    He has lived in Hangzhou since last spring.
    My grandfather bought the car five years ago.
    7. 易错点辨析
    1)  考生容易把一些瞬间动词用现在完成时表达,这是错误的。如:
    (×) He has died for two years. 他死了两年了。
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