Revision_--Present_perfect_tense 现在完成时态 .ppt

现在完成时The Present Perfect Tense 现在完成时注意四个分清(考点)： 1.分清与一般过去时的用法 2.分清终止性动词和延续性动词。 3.分清has been to ,has gone to 4. 分清for, since, ago 的用法 I cleaned the blackboard half an hour ago（只说明“擦”和其发生的时间) I have cleaned the blackboard. （说明现在黑板是干净的） The teacher has written some new words on the blackboard（黑板上现在有单词） The teacher wrote some new words on the blackboard just now.（可能黑板上现在没有单词） 总结:（1）一般过去时只表示过去的动作或状态, 和现在不发生关系。(强调动作发生的时间) 现在完成时表示过去发生的某一动作 对现在造成的影响,强调的是现在。(侧重动作的结果) I. 分清一般过去时与现在完成时 Tell the differences Tell the differences (一般过去时与过去完成时) 1.I saw him yesterday. I have seen him. 2.She lived here in 1980. She has lived here since 1980 She has lived here for 24 years. 3.I read the book this morning. I have read the book this morning. The train has arrived just now. The train has just arrived. She has returned from Paris yesterday. She has returned from Paris. 总结:（3）. 一般过去时常与表示过去的时间状语连用,如:yesterday, last year, three days ago, just now,等。 现在完成时不能和表示过去的时间状语连用,其时间状语往往是since…,for… , just, ever, never, before, already, yet , so far等或无时间状语。 √ ╳ ╳ √ T or F 1.Ａ: I ________(lose) my pen. Can you lend me yours? Ｂ: Why dont you buy one? Ａ: It _______(fall) into the river only a moment ago when I washed my hands. Now Ive got to fill in a form with a pen. 2. A: --When did you lose your cat? B: --I __________(lose) it last night. A: --Where did you find it? B: --I __________(find) it the garden. lost found have lost fell 总结: 如果询问某事发生的时间，地点只用一般过去时。 Fill in the blanks. Fill in the blanks： 1.--_____ you ______ (clean) the room? --Yes, we__________ (do) that already. --When _______ you ______(do) it? --We _______(do) it an hour ago. 2. --______ he ______(see) this film yet? --Yes. ---When _____ he _____(see) it? --He ______ it last week. 3. --How many times _____you______(come) here? --Once. Have cleaned have done did do did Has seen did see saw have come 4. I __________ (read) the