一，概念
表示在过去某个时间里所发生的动作或存在的状态。通常在句子里到表示过去时间的词或词组。如：yesterday, yesterday morning, yesterday afternoon, yesterday evening, the day before yesterday, last night, last week, last month, last year, a moment ago, just now, two days ago, a week ago, in 1990等。
如：I went to bed at eleven last night. 昨晚我11：00睡觉。
二 动词过去式的构成规律
（一）规则动词的过去式
1，一般情况下+，在动词原形后面加-ed;
Look--- looked play----played start--- started visit—visited
2, 以不发音e结尾的动词，在词尾直接加-d;
clean的过去式 Live—lived use---used
3, 以“辅音字母+y”结尾的动词，先将y 改成i,再加 –ed;
Study---studied try—tried fly---flied
4,以重读闭音节（即辅音+元音+辅音）或 r 音节结尾，末尾只有一个辅音字母的动词，要先双写这个辅音字母后，再加 –ed。
Stop---stopped plan---planned preferred
(二)不规则动词的过去式
1 改变动词中的元音；
Begin--- began drink---drank come---came eat---ate
Grow---grew run---ran know---knew win---won speak---spoke
Take ---took write ---wrote get---got
2 变词尾的-d 为-t
Build---built lend---lent send---sent spend--spent bend--bent
3 与动词原形一样；
Cut---cut put---put cost----cost hurt---hurt shut---shut
4 变-ay 为—aid(少数动词)
Say---said pay---paid lay---laid
5 采用不同词根；
Sell--- sold teach----taught buy----bought
6 其他
Am/is ---was are---were have/has--- had do---did
二 加 –ed 后的读音方法
1 ed加在清辅音后面读/t/
Finished/-t/ help /-t/ asked/-t/
2 ed 加在浊辅音或元音结尾的， 读/d/
Played/-d/ lived/-d/ enjoyed/-d/
3 ed 加在/t/或/d/后面，读/id/
Wanted /-tid/ needed/-did/ visited /-tid/
过去时练习： 写出下列动词的过去式
Is\am______ fly___ plant_____ are_____ drink_____
Play ______ go____ make______ does_____ dance_____
Worry______ ask____ taste_______ eat_____ draw_____
Put_____ throw______ kick_______ pass_____ do______
用所给动词的适当形式填空
1 We_____ (live) in Japan last year.
2 Susan_____(stop) the car on the street yesterday.
3 My mother____(clean) my room and I _____( study) for the English test last Sunday.
4 What____ you_____(do) last night
5 On Saturday morning I ____(play) football
二 用括号内所给动词的适当形式填空
（1）May_____(finish) her homework very late yesterday evening.
（2）Han Mei_____(bring) her pet to the park that day.
（3）His father______(buy) a new computer for him last week
（4）Miss Du______ (walk) to work every day last term.
（5）We____(move) to Shenyang 8 years ago.
（6）_____ you _________(have) bread for breakfast this morning
（7）She_______(give) me a nice present last night.
（8）The police______(stop) the car and_____(catch) the thief (小偷) just now.
（9）Tom ____(carry)water for the old man last Saturday.
（10）Uncle Wang______(come)into the room and______(find) something to eat.
（11）Lily______(study)in the classroom for two hours and then ____(leave).
（12）Jimmy______(do) a lot today. He______(go) shopping and _____(cook)supper.
（13）We_____(go) to the cinema last night. The film_____(be)very good.
（14）What time ______you________(get) to school this morning
三 句子变化
（一）一般过去时的一般疑问句
1.把 was, were放在句首，其余位置不变。由Was… 引导的一般疑问句，肯定答为：Yes,… was. 否定回答为：No,…wasn’t 由Were…引导的一般疑问句，肯定回答为：Yes,…were.否定回答为：No,…weren’t.
如：
（1）I was born in Shanghai. ----Were you born in Shanghai
---Yes, I was.(肯定回答) ----No, I wasn’t(否定回答)
（2）They were in Li Yan’s home last night. ----Were they in
Li Yan’s home last night
--Yes, they were.(肯定回答) --No, they weren’t(否定回答)
2.在行为动词的句子中，要用助动词did 来引导，其余的语序不变。要注
意的是，要把行为动词的过去式改为原形。肯定回答为：Yes,…did 否定
No,…didn’t.
如：John played computer games last John play computer games last night
Yes, he did. No,he didn’t
(二)一般过去时的否定句
1 在表示过去存在的状态的句子中，相接在was, were的后面加上not。
如：
（1）He was in the park the day before yesterday.
He was not in the park the day before yesterday.
(2) We were busy last week.
We were not busy last week.
2 在表示过去的时间发生的动作的句子中，要在行为动词的前面加助动词didn’t. 然后把过去式的行为动词改为动词原形。 即：didn’t+ 动词原形。
如
(1) She played the violin last night.
She didn’t play the violin last night.
(2) They swam in the lake yesterday.
They didn’t swim in the lake yesterday.
(三) 一般过去式的特殊疑问句
did… (主要是询问过去发生了什么事情，注意要把过去式改为动
原形。）
We ate Chinese food last night.
What did we eat last night
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