2022年初中英语现在完成时 .pdf
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1、精品资料欢迎下载现在完成时讲解与练习如果你想说 “ 我已经看过某部电影,所以不想看了” 、 “ 某人曾经做过什么事情” 等等,该如果表达呢?首先请看下面的句子:(1)I have seen the film. I dont want to see it again.这部电影我已经看过,不想再看了。(2)Have you answered all the questions? 所有的问题你都回答了吗?(3)Have you ever looked at a travel brochure? 你看过旅游宣传册吗?(4)She has never visited the USA. 她从没有过去美国。
2、观察:以上句子的谓语动词的一个共同特点是_, 用于表示在以前的某个时间曾经做过的、发生的事情,这种行为对目前有某种影响。我们把这种时态称为“ 现在完成时 ” 。一、现在完成时的概念。现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响 。She has bought a car 她买了一辆车。She has arrived. 她到了。表示从过去某一时间开始一直持续到现在的动作或状态。Weve known each other since we were children. (我们从小就认识。 )I have been a member of th
3、e Party for 10 years. 二、构成: ” 助动词 have, has + 过去分词 ”现在完成时态的肯定句、否定句和疑问句形式(以work 为例):人称肯定否定疑问回答第一人称I have seen the UFO. We have travelled around the world. I havent seen the UFO. We havent travelled around the world. Have you seen the UFO? Have you travelled around the world? Yes, I have./ No, I haven
4、 t.Yes, we have./ No, we havent.第二人称You have been to England. You havent been to England. Have you been to England? Yes, I/we have. No, I /we havent.第 三人称He/She has been to Beijing. They have given concerts all over the world. He/ She hasnt been to Beijing. They havent given concerts all over the wo
5、rld. Has he/ she been to Beijing? Have they given concerts all over the world? Yes, he/she has. No, he/she hasnt.Yes, they have. No, they havent.注:规则动词的过去分词的构成与过去是相同,不规则动词的过去分词见附表。练. 把下面变否定句、一般疑问句并作肯定和否定回答。1. I have done my homework. 否定句: _ 一般疑问句: _ 回答: _ 2. The plane has arrived. 否定句: _ 一般疑问句: _ 回答
6、: _ 三、现在完成时用法归纳1. 现在完成时表示过去发生的动作现已完成,对现在造成的影响和结果。(此种用法谓语动词用短暂性动词) 如:The plane has arrived. 常用的时间状语和副词:already (已经) 用于肯定句中,通常放在have/ has 与过去分词之间如: I have already done my homework. yet (还,仍然,已经) 用于否定句和疑问句的句末。如: Has she finished cooking yet? 他做完饭了吗?练: I have already done my homework. ( 变为否定句 ) _ ever (
7、曾经 ),句中,多用于疑问句如: Have you ever been to Shanghai? never (从不 ) ,本身否定精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 1 页,共 4 页精品资料欢迎下载before (以前 ),句尾,独立用just (刚刚 ),用于肯定句中,常用在助动词和过去分词之间。如: I have just heard the news. 我刚刚听到消息。2. 现在完成时表示过去已经开始,持续到现在, 可能延续到将来的动作和状态。常与表示过去某一时刻延续到现在的一段时间状语连用。如:a.for + 一段时间: f
8、or two hours b.since + 时间点: since 1999, since last year c.since + 一段时间 + ago =for + 一段时间since two days ago=_ d.up to now, till now, , so far( 到目前为止 )e.in the past two years, in the last few days f.recently, lately( 最近 ) 如:Miss Zhao has taught math for five years. His mother has worked in the shop si
9、nce 1990. The Greens have lived in London since three years ago. 注:其中在a,b,c,d 这四种结构中,谓语动词必须为延续性动词。如:I have had this book for one and a half years. ( 这本书我已买了一年半了!) 用 since和 for 填空1._two years 2._two years ago 3._last month 4._ 1999 5._yesterday 6._ 4 o clock7 _4 hours 8._an hour ago 9. _we were child
10、ren 10._ lunch time 11._ she left here 12. He has lived in Nanjing _ the year before last. 13. I ve known him _ we were children.14. Our teacher has studied Japanese _ three years. 15. She has been away from the city _ about ten years. 4. 短暂性动词怎样和表示一段时间的状语连用。英语中的短暂性动词,也叫做终止性动词、瞬间动词或非延续性动词,只表示一时的动作,不
11、能与表示延续的时间状语连用。 常见的短暂性动词有: go, come, leave, find, buy, arrive, give, stop, join, marry, die, begin, start, borrow, close, open, lend等。eg. I have bought this book for three months. () 非延续性动词与一段时间连用时可采用下列三种方法:(1)将非延续性动词转化为延续性动词。leave- be away from close- be closed join- be in begin/start- be on (电影开始 )
12、 buy- have go- be there die- be dead finish- be over borrow- keep join be in open- be open come back- be back (2)时间状语的变化:把表时间的状语“for ”变为 “ 数词 + 时间名词 +ago” 的短语形式。(即:将时间状语改为过去时间,并用一般过去时代替现在完成时)如: 他离开济南三年了。He has left Ji nan for three years. ( )He has been away from Ji nan for three years.He left Ji na
13、n three years ago.例如:1) They borrowed it last week. They _it since _. 2) I bought a pen two hours ago. I _a pen for _. 5. have been to/ have gone to/ have been in 三种结构的区别(1)have been to 曾经去过某地(现已离开 ),可以与ever, never, once, twice 等连用。(2)has gone to 去某地了,现在还未回来。此句型一般用于第三人称。(3) have been in 表示已在某地呆了多久,若
14、该地为小地方则用at。句末常有for + 一段时间或 since + 时间点翻译:你以前去过北京吗?_ 吉姆已经去了伦敦。_ 格林一家在中国已经两年了。_ 6. 现在完成时与一般过去时的区别:(1) 侧重点不同:现在完成时是与现在有关的时态,属现在时态范畴,它侧重于过去的动作对现在造成的影响。而一般过去时是一种过去时态,侧重于表示过去不能用 buy 精选学习资料 - - - - - - - - - 名师归纳总结 - - - - - - -第 2 页,共 4 页精品资料欢迎下载的动作,与现在无关。如:Yesterday I went to the zoo. ( 仅说明昨天去了动物园,与现在无关)
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