英语过去完成时态课件.pptx
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1、Welcome to our class!Welcome to our class!By Liu Yigui2012.10Revision:一般过去式的用法1)一般过去时表示过去某个时间发生的动作或)一般过去时表示过去某个时间发生的动作或状态,常和表示过去的时间连用,状态,常和表示过去的时间连用,yesterday, last night, in 1990, two days ago,just now,at that time等。等。2)也表示过去经常或反复发生的动作,常和)也表示过去经常或反复发生的动作,常和often, always等表示频度的时间状语连用。等表示频度的时间状语连用。构成构
2、成:主语:主语+谓语(动词的一般过去式)谓语(动词的一般过去式)+其其他他 ( )1 your father at work the dayyesterday(前天) A Was; before B Is; before C Was; after D Is; after ( )2 The twinsin Dalian last year Theyhere now A are; were B were; are C was; are D were; was 过去完成时态过去完成时态Past perfect TensePast perfect Tense教学重、难点:教学重、难点:1.1.过去完成
3、时的的巩固及运用。过去完成时的的巩固及运用。2. 2. 过去分词的构成。过去分词的构成。3.3.与现在完成时的区别与现在完成时的区别过去完成时可以表示过去完成时可以表示过去某一时刻过去某一时刻 或或某一动作之前完成的动作某一动作之前完成的动作或或呈现呈现 的状态的状态。也就是说发生在。也就是说发生在“过去的过去的 过去过去”。定义:构成构成:had过去分词过去分词 6:00 7:00 6:00 7:00 现在现在 By the time I got up, my sister had already washed all the clothes.1. .我到家时她已经睡了。我到家时她已经睡了。
4、 By the time I got home, she had already gone to bed.2. .到昨天晚上时消息已传遍全球。到昨天晚上时消息已传遍全球。 By yesterday evening the news had spread through the world.3.他走以后我找到了那封信。他走以后我找到了那封信。 I found the letter after he had gone away. We reached the cinema late. The film had already been on for ten minutes.4.我们到电影院晚了我们
5、到电影院晚了,电影已经开始十分电影已经开始十分钟了。钟了。过去分词的构成:过去分词的构成:1. 规则动词的变化规则动词的变化 (regular verbs ):a) 一般情况下在动词后面加一般情况下在动词后面加 ed work - worked play - playedb) 以以 e 结尾的动词直接加结尾的动词直接加 d use - used refuse - refusedc) 以辅音字母加以辅音字母加 y 结尾的动词,把结尾的动词,把 y 改改 i 再加再加 edstudy - studiedcarry - carriedd) 以重读闭音节结尾的,前面有单个元音字以重读闭音节结尾的,前面
6、有单个元音字母时,双写辅音字母,再加母时,双写辅音字母,再加 edstop - stoppeddrop - dropped过去完成时的构成过去完成时的构成:由助动词:由助动词had + 动词的过去分词(动词的过去分词(V.pp)admit - admittedbeg-beggeddrop; prefer; plan;常用的时间状语等标志词:1、by, before, when, by the time等构成的短语或引导的从句。Eg. 1)By the time she came to the bus stop, the bus had already gone.2) We had finish
7、ed the task before last midnight3) When I arrived at the post office, I found that I had left the letter at home4) After I had finished my homework, I went to bed.3、 从过去开始, 一直持续到过去的另一时间的动作、状态。常用since,for.Eg. She said that she had learned English for years since he came to our school注意:瞬间动词不能和一段时间状语,
8、及since, for 引导的从句和短语连用。2、 由said, told, knew, heard, thought 等引导的宾语从句中。Eg. He told me that he had heard of it. I thought my homework had been fininshed. But I didnt. 构成构成:had过去分词过去分词否定式:主语+hadnt+p.p.+.疑问式:Had+主语+p.p.+?肯定答语:Yes, 主语+had否定答语:No, 主语+hadnt肯定式:主语+had+p.p.+.构成构成:had过去分词过去分词1:I had learnt 50
9、00 English words by the end of last week. 2:I hadnt learnt 5000 English words by the end of last week.3:Had you learnt 5000 English words by the end of last week ?4:How many English word had you learnt by the end of last week ?1.The thief had run away before the police arrived.2.We had learnt 3 Chap
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