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1、初中八种时态初中八种时态一般现在时的用法一般现在时的用法1) 经常性或习惯性的动作,常与表示频度的时间状语连用。时间状语: every, sometimes, at, on Sunday。I leave home for school at 7 every morning. 每天早上我七点离开家。2) 客观真理,客观存在,科学事实。:The earth moves around the sun. 地球绕太阳转动。Shanghai lies in the east of China. 上海位于中国东部。3) 表示格言或警句。Pride goes before a fall. 骄者必败。注意注意:
2、此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要 用一般现在时。例:Columbus proved that the earth is round. 哥伦布证实了地球是圆的。4) 现在时刻的状态、能力、性格、个性。:I dont want so much. 我不要那么多。Ann writes good English but does not speak well. 安英语写得不错,讲的可不行。 比较比较:Now I put the sugar in the cup. 把糖放入杯子。I am doing my homework now. 我正在做功课。 第一句用一般现在时,用于操作演
3、示或指导说明的示范性动作,表示言行 的瞬间动作。第二句中的 now 是进行时的标志,表示正在进行的动作的客观状 况,所以后句用一般现在时。一般过去时的用法一般过去时的用法1)在确定的过去时间里所发生的动作或存在的状态。例如:时间状语有: yesterday, last week, an hour ago, the other day, in 1982 等。Where did you go just now? 刚才你上哪儿去了?2)表示在过去一段时间内,经常性或习惯性的动作。 When I was a child, I often played football in the street. 我
4、是个孩子的时候,常在马路上踢足球。Whenever the Browns went during their visit, they were given a warm welcome.那时,布朗一家无论什么时候去,都受到热烈欢迎。 3)句型:1. It is time for sb. to do sth “到时间了“ “该了“。 It is time for you to go to bed. 你该睡觉了。2It is time that sb. did sth. “时间已迟了“早该了“ , It is time you went to bed. 你早该睡觉了。3. would (had)
5、rather sb. did sth. 表示宁愿某人做某事。 Id rather you came tomorrow.还是明天来吧。4) wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等, 而一般过去时表示的动作或状态都已成为过去,现已不复存在。 I thought you might have some. 我以为你想要一些。注意注意: 用过去时表示现在,表示委婉语气。 1)动词 want, hope, wonder, think, intend 等。 Did you want anything else? 您还要些什么吗?I wondered if
6、 you could help me. 能不能帮我一下。 2)情态动词 could, would。 Could you lend me your bike? 你的自行车,能借用一些吗? Used to / be used toused to + do:“过去常常“表示过去习惯性的动作或状态,但如今已不存在。 Mother used not to be so forgetful. 老妈过去没那么健忘。Scarf used to take a walk. 斯卡夫过去常常散步。be used to + doing: 对已感到习惯,或“习惯于“,to 是介词,后需加名 词或动名词。 He is use
7、d to a vegetarian diet.Scarf is used to taking a walk. 斯卡夫现在已习惯于散步了。典型例题- Your phone number again? I _ quite catch it.- Its 69568442.A. didnt B. couldnt C. dont D. cant 答案 A. 本句虽没有明确的时间状语,但从语意上看出,在听的时候没有 听懂这个动作发生在过去,因此应用过去时。一般将来时一般将来时1)shall 用于第一人称,常被 will 所代替。will 在陈述句中用于各人称,在 征求意见时常用于第二人称。 Which p
8、aragraph shall I read first? 我先读哪一段呢?Will you be at home at seven this evening? 今晚七点回家好吗?2) be going to +不定式,表示将来。a. 主语的意图,即将做某事。 What are you going to do tomorrow? 明天打算作什么呢?b. 计划,安排要发生的事。 The play is going to be produced next month。这出戏下月开播。 c. 有迹象要发生的事。 Look at the dark clouds, there is going to be
9、 a storm. 看那乌云,快要下雨了。3) be +不定式表将来,按计划或正式安排将发生的事。 We are to discuss the report next Saturday.我们下星期六讨论这份报告。4)be about to +不定式,意为马上做某事。He is about to leave for Beijing. 他马上要去北京。 注意注意:be about to do 不能与 tomorrow, next week 等表示明确将来时的时间状语 连用。be going to / will 用于条件句时,用于条件句时,be going to 表将来表将来,will 表意愿。表意
10、愿。例如:If you are going to make a journey, youd better get ready for it as soon as possible.Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror. be to 和和 be going to be to 表示客观安排或受人指示而做某事, be going to 表示主观的打算或计划。 I am to play football tomorrow afternoon. 明天
11、下午我去踢球。 (客观安排) Im going to play football tomorrow afternoon. 明天下午我想去踢球。 (主观安排)一般现在时表将来一般现在时表将来1)下列动词 come, go, arrive, leave, start, begin, return 的一般现在时可以表示 将来,主要用来表示在时间上已确定或安排好的事情。The train leaves at six tomorrow morning. 火车明天上午六点开。When does the bus star? It stars in ten minutes. 汽车什么时候开?十分钟后。2)以
12、here, there 等开始的倒装句,表示动作正在进行。Here comes the bus. = The bus is coming. 车来了。There goes the bell. = The bell is ringing. 铃响了。 2)在时间或条件句中。When Bill comes (不是 will come), ask him to wait for me. 比尔来后,让他等我。Ill write to you as soon as I arrive there. 我到了那里,就写信给你。4)在动词 hope, take care that, make sure that 等
13、的宾语从句中。例如:I hope they have a nice time next week. 我希望他们下星期玩得开心。Make sure that the windows are closed before you leave the room. 离开房间前,务必把窗户关了。用现在进行时表示将来用现在进行时表示将来下列动词 come, go, arrive, leave, start, begin, return 等现在进行时可以表示将来。Im leaving tomorrow. 明天我要走了。 Are you staying here till next week? 你会在这儿呆到下
14、周吗?现在完成时现在完成时现在完成时用来表示之前已发生或完成的动作或状态,其结果的影响现在 还存在;也可表示持续到现在的动作或状态。 其构成:have (has) +过去分词。 比较一般过去时与现在完成时比较一般过去时与现在完成时1)一般过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作; 现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。2)一般过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状 语连用,或无时间状语。一般过去时的时间状语:yesterday, last week,ago, in1980, in October, just now 等,皆为具
15、体的时间状语。现在完成时的时间状语:for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always 等,皆不确定的时间状语。共同的时间状语:this morning, tonight, this April, now, already, recently, lately 等。 3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性的, 如 live, teach, learn, work, study, know.。一般过去时常用的非持续性动词有 come, go, leav
16、e, start, die, finish, become, get married 等。I saw this film yesterday. (强调看的动作发生过了)I have seen this film. (强调对现在的影响,电影的内容已经知道了)Why did you get up so early? (强调起床的动作已发生过了)Who hasnt handed in his paper? (强调有卷子未交,疑为不公平竞争)He has been in the League for three years. (在团内的状态可延续)He has been a League member for three years. (是团员的状态可持续)句子中如有过去时的时间副词(如 yesterday, last, week, in 1960)时,不能 使用现在完成时,要用过去时。(错)Tom has written a letter to his parents last night.