资源简介

(共24张PPT)
初中时态讲解
Welcome to English Class!
课前热身
课程早知道
1.考情分析
2.课前小测
3.时态讲解
4.课后小测
5.总结
考情分析—分值
时态在单项选择中出现2个左右
书面表达中时态的正确运用
课前小测
1. What ____ Jane ____ by the time he was sever
A. did, do B. has, done
C did, did. D. had, done
2.I ______ 900 English words by the time I was ten.
A. learned B. was learning
C. had learned D. learnt
用所给动词的正确形式填空
1.Lucy___(do) some cleaning last weekend.
2. We ______ (paint) the house before we moved in.
He said that he _____(be) to England before.
He said that he had been to England before.
The film _____(begin) when I arrived at the cinema.
The film had begun when I arrived at the cinema.
By nine o'clock last night, I ___(finish) my work.
By nine o'clock last night, I had finished my work.
过去完成时
概念：
以过去某个时间为标准，在此以前发生的动作或行为，或在过去某动作之前完成的行为，即“过去的过去”。
基本结构：
主语+had + done（过去分词）+其他
过去完成时
与过去完成时连用的时间标志词：
1.By the end of last term, we had learned 5000 new words.
2.He said he had worked in that factory since 1949.
3.They had planted six hundred trees before last Wednesday.
4.I had been at the bus stop for 20 minutes when a bus finally came.
1.时间状语：
before, when，as soon as, by the end of last year(term, month…),told,said,knew等动词后的宾语从句,etc.
2.基本结构：
主语+had + done（过去分词）+其他
3.否定形式：
主语+had + not +done（过去分词）+其他
过去完成时
1.一般情况下，在动词后加-ed
work→worked listen→listened
jump→_____
2.在以- e结尾的动词后只加-d
close→closed like→liked
agree→_______
过去分词规则变化
3.在以辅音字母+y结尾的动词，应将y改为i再加ed
study→studied carry→carried
try→_____
4.以重读闭音节结尾的动词，要双写末尾的辅音字母再加-ed
stop→stopped drop→dropped
plan→_______
过去分词规则变化
1)AAA型（动词原形、过去式、过去分词同形）
cost（花费） cost cost cut（割） cut cut
let（让） let let put（放） put put
(2) AAB型（动词原形与过去式同形）
beat（跳动） beat beaten
(3) ABA型（动词原形与过去分词同形）
become（变成） became become
come（来） came come
run（跑） ran run
不规则变化（节选）
(4) ABB型（过去式与过去分词同形）
sit（坐） sat sat
meet（遇见） met met
keep （保持） kept kept
sleep（睡） slept slept
feel（感觉） felt felt
(5) ABC型（动词原形、过去式与过去分词三者不同形）
begin（开始） began begun
drink（喝） drank drunk
grow（生长） grew grown
不规则变化
课后小测
用所给动词的适当形式填空。
1 .He ______ （work）in the factory for three years before he joined the Army.
2. By the end of last week, they ____(complete) the bridge.
3. By the time he was 4, he _____ (learn)a lot of German words.
4. The students ______ (clean)their classroom when the visitors arrived.
总结回顾
1.过去完成时概念
2.结构
3.与过去完成时连用的时间状语
4.过去分词的变化规则
Thanks for your listening

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