现在完成时导学案

1、语法专练：现在完成时1. 定义：表示过去发生或已经完成的某一动作，强调其对现在造成的影响或结果。2结构：肯定句：主语+have/has+过去分词+其他否定句：主语+haven' t/hasn过去分词+其他一般疑问句：Have/Has+主语+过去分词+？肯定答语：Yes,主格代词+have/has.否定答语：No,主格代词+haven' t/hasn ' t.注意：过去分词的特殊变化：课本P107,P1083.用法 表示到现在为止已经完成或刚刚完成的动作，并对现在有影响。常与already, yet, just,rece ntly, ever, n ever, befor

2、e, in the past 10 years等 表示不确定时间的时间状语连用。I have returned the book already.He hasn ' t come bagtet.I just (fini sh) lun ch.注意：already用于肯定句中，yet用于疑问句和否定句中。(2)现在完成时表示从过去一直持续到现在的动作或状态。此时，句中谓语动词通常是延续性动词，且常与表示一段时间的时间状语连用。女口： these days, all this year, recently, fo叶时间段以及since+时间点等等。(unit8内容)Zhang Lanalr

3、eadyin the school for two years, (study)Mr Greenin China since ten years ago, (work)注意：瞬间动词不能和时间段连用.4现在完成时与一般过去时的对比 现在完成时：强调这一动作与现在的关系，如对现在产生的结果、影响等。而一般过去时：纯粹在过去发生的事情。现在完成时past * future|now一般过去时注意:现在完成时不能和表 过去”的时间副词或短语连用如：yesterday, last yea等。巩固练习1. you(clea n) the roomYes, we(do) that already.Wheny

4、ou(do) it? We(do) it an hour ago.2. A：he(fin ish) his work today? B：Not yet.3. A：How many timesyou(come) here? B：Onee.4. Mr Chen(give)up smoking last year.5. The famous writer(write) one new book in the past two years.6. Our country(change)a lot so far.Yes. I hope it will be even(good).7. I(lose) my

5、 pen, and I(look)for it now.8. Harry Potter is a very nice film. I(see)it twice.9. My mother(come) to see me n ext Sun day.10. Kate ( not see) her grand mother's photo before.11. Ialready(see) the film. I(see) it last week.12. So far I(make) quite a few friends here.13. Her mother(become)a docto

6、r jn 1970. Shework) in the hospital since 26 years old.14. He(go) to school on foot every day.15. I Ibll him the news that our class(win) already.仅供个人用于学习、研究；不得用于商业用途For personal use only in study and research; not for commercial use.Nur f u r den pers?nlichen f u r Studien, Forschung, zu kommerziel

7、len Zwecken verwendet werden.Pour l ' e tude et la recherche uniquementa des fins personnelles; pascomraerateslesisto员bko gA.nrogeHKO TOpMenob3ymrnflCH6yHeHuac egoB u HHuefigoHMucno 员 B30BaTbCEb KOMMepqeckuxqe 员 ex.仅供个人用于学习、研究；不得用于商业用途For personal use only in study and research; not for commercial use.Nur f u r den pers?nlichen f u r Studien, Forschung, zu kommerziellen Zwecken verwendet werden.Pour l ' e tude et la recherche uniquementa des fins personnelles; qbas fin