作品介绍

现在完成时代 构成： 1.肯定句：have（has）＋过去分词。 2. 否定句：haven’t（hasn’t）＋过去分词。 3. 疑问句：把助动词have或has提到主语之前。 回答用yes, …have（has）. / no, …haven’t（hasn’t）. 连用时间状语：already, yet, ever, never, just, befｏｒe 等。 “仍然，还 ” 用在疑问句和否定句中，放在句末。 i haven’t read this book yet . have you had breakfast yet ? “从来不” 用在否定句中,放在句中。 is he famous ?i have never heard of him . “以前”用在完成时中，放在句末。 i have never read this kind of books befｏｒe. exercise 根据所给情况，用just,already或yet造句。 1.after lunch you go to see a friend at her house.she says‘would you ｌｉｋｅ something to eat?’ you say: no, thank you. _______________（ have lunch ） 2.joe goes out. five minutes later,the phone rings ａｎｄ the caller says ‘can i speak to joe?’ you say: i’m afraid _________________.（ go out ） 3.you are eating in a restaurant this evening. the waiter thinks you have finished ａｎｄ starts to take your plate away.you say: wait a moment !_______________________ （ not / finish ） 4.you are going to a restaurant this evening. you phone to reserve（预定）a table. later your friend says ‘shall i phone to reserve a table? ’you say: no,__________________ it （do） 1. i am a doctｏｒ. i began to wｏｒk when i was 22.now , i am 26. i ________ fｏｒ four years. 2. we went to the usa last monday. today is monday . we _________ （stay） in the usa since last monday. b级真题 since ａｎｄ fｏｒ 一、用fｏｒ和since填空。 ______three hours ______three o’clock ______two days ______yesterday afternoon ______i came here ______last sunday 1.they’ve known each other since_______. a.1995 b. three years 2.i’ve been interested in chinese fｏｒ______. a. last year b. one year 3. she has been a doctｏｒ fｏｒ______. a. two years b.two years ago 4. i’ve had a headache since_______. a. i got up this mｏｒning b. five hours 6. my parents have owned this house fｏｒ______. a. a long time b. many years ago 7. they’ve been in love since______. a. last spring b. three months 8. we have known each other since_____. a. one year b. last year 9. --how long have you been ｌｉｋｅ this? --since______. a.last night b. two days 10.--how long has she wｏｒked here? --she has wｏｒked here fｏｒ_____. a. 1993 b. six years 不规则动词的过去式以及过去分词巧记规律 aaa: put– put –put let—let –let aba: become—became—become abb: stａｎｄ—stood—stood ａｂｃ: eat— ate—eaten aaa cost-cost-cost read-read-read put-put-put cut-cut-cut let-let-let set-set-set beat-beat-beat hit-hit-hit hurt-hurt-hurt spit-spit-spit rid-rid-rid 一、原形、过去式和过去分词的词形和读音都相同的单词，结尾字母一般是t或d。 特殊：动词read的过去式和过去分词虽然词形与原形一致，read-read-read，但发音分别是[ri:d]-[red]-[red]。 总结现在完成时： 1、构成：have / has +过去分词。 2、概念： （1）表示过去或已经完成的某一动作对现在 成的影响或结果。常与下列状语连用:already, just, yet, ever, never, befｏｒe （2）表示过去已经发生，持续到现在的动作或状态，可以和表示从过去某一时刻延续到现在（包括“现在”在内）的一段时间的状语连用。 a.fｏｒ和表示一段时间的词组连用。 如：fｏｒ 3 years b.since和表示过去某一时刻的词或词组连用。 如：since 1997, since two years ago,since last week