过去完成时现在完成时将来完成时课件高三英语语法.pptx

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1、完成时态,过去完成时,现在完成时,将来完成时,一、现在完成时,1. 构成：has/have+过去分词肯定句：I/we/they/you have found the keys. She/he has finished her/his homework.否定句：I/We/They/You havent found the keys. She/He hasnt finished her/his homework.一般疑问句及回答：Have I/we/they/you found the keys? Yes, I/we/they/you have; No, I/we/they/you havent.

2、 Has she/he finished her/his homework? Yes, he/she has; No, he/she hasnt.,2. 现在完成时的用法 表示从过去某一时刻开始，一直持续到现在的动作或状态，常用延续性动词。I have studied English for 8 years.,表示过去发生或完成的某一动作对现在造成的影响和结果，常用非延续性动词。I have lost my keys.I have left Beijing.,has/have been to与has/have gone to的区别has/have been to+地点表示曾经去过某地，说话时已

3、经不在那里了，常与just,ever,never等连用。I have been to America. 表示我去过美国，但是现在已经不在美国了。has/have gone to+地点表示去某地了，到了某地或者正在去某地的途中，说话时还没回来。I have gone to America. 表示我去美国了，我到美国了或者我正在去美国的路上，说话时还没回来。,现在完成时与一般过去时的比较这两个时态都表示已经发生过的事。主要区别是现在完成时表示的动作与现在有关系或是有影响；一般过去时单纯谈过去的事，与现在没有关系。,二、过去完成时,1. 构成：had+过去分词肯定句：I/we/they/you/Sh

4、e/He had found the keys. 否定句：I/We/They/You/She/He hadnt found the keys. 一般疑问句及回答：Had I/we/they/you /she/he found the keys? Yes, I/we/they/you/she/he had; No, I/we/they/you/she/he hadnt.,2. 过去完成时的用法：总的来说，过去完成时表示“过去的过去” 表示在过去某一时间或动作之前已经发生或完成了的动作。The film had been on for 5minutes when I arrived at the

5、cinema.I had finished my homework before I began to watch TV., 表示从过去某一时间开始，持续到过去另一时间的动作或状态。Mr. Li had taught English for 8 years in China before he came to America., 用于一些固定句型，如hardly.when., no sooner.than., it was the first time that.Hardly had he seen me when he ran away.I had no sooner reached hom

6、e than it began to rain. It was the first time this year that he hadnt worked on a Saturday.,三、将来完成时,1. 构成：shall/will have+过去分词；第一人称作主语的句子用shall或will，其他人成作主语都用will.,2. 将来完成时的用法 表示动作或状态持续到将来某一时间，常用延续性动词。By the end of next month he will have been here for 10 years., 表示动作或状态在将来某一时间之前已经完成，并往往对将来产生影响。We

7、shall/will have learnt 12 units by the end of this term.,1. -Who will go to the station to meet Lorry? -I will. I _ her several times. A. met B. have met C. had met D. will meet2. How long have you _ here? A. come B. got C. arrived D. been3. We _very early so we packed the night before.A. leave B. h

8、ad left C. were leaving D. have left4. He _ to play _ before he was 11 years old. A had learned, piano B. had learned, the piano C. has learned, the piano D. learns ,piano,B,D,B,B,单项选择,5. He _ in the factory for three years before he joined the Army. A. has worked B. works C. had worked D. will work

9、 6. By the end of last week, they _ the bridge. A. has completed B. Completed C. will complete D. had completed 7. The students _ their classroom when the visitors arrived. A . have cleaned B. had cleaned C. was cleaned D. have been cleaned 8. Jane has _ to BeiJing. She will come back tomorrow.A. been B. gone C. went D. never been,C,D,B,B,9.Bytheendofthisyear, I_enoughmoneyforaholiday.Awillsave Bwillbesaving CwillhavesavedDhavesaved10.Ihopeherhealth_greatlybythetimewecomebacknextyear.Aimproves Bimproved Cwillbeimproved Dwillhaveimproved,C,D,Thank you!,