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表示在的过去某个时间里所发生的动作或存在的状态。通常在句子里找到表示过去时间的词或词组。如：yesterday，yesterday morning，yesterday afternoon，yesterday evening，the day before yesterday
（前天），last night，last week，last month， last year，a moment ago（刚才），just now（刚才）， 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。

(一)规则动词的过去式

1、一般情况下，在动词原形后面加-ed；如：look→looked play→played；
2、以不发音 e 结尾的动词，在词尾直接加-d；如：live→lived use→used；
3、以“辅音字母+ y”结尾的动词，先将 y 改为 i ,再加 –ed；如：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。如：stop→stopped plan→planned；

(二)不规则动词的过去式（后附不规则动词变化表）

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。如：am/is→was are→were have/has→had do→did

（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. 否定回答：No, …didn’t. 如：
John played computer games last night.
→Did John play computer games last night?
→Yes, he did. (肯定回答) →No, he didn’t. (否定回答)

（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

1.What 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词原形。）
We ate Chinese food last night. →What did we eat last night?
2.Where did ?( 主要是询问过去事情发生的地方。)
They sang and dance in the music room yesterday morning.
→Where did they sing and dance yesterday morning?
3.Who + 动词过去式 … ?( 主要是询问过去事情发生的人物。)
Mike and Tom climbed mountains last weekend.
→Who climbed mountains last weekend?

1、在表示某个时间里存在的状态的句子，系动词用过式 was，were 构成。
如：（1）I was at home yesterday. 昨天我在家。（2）We were in the gym just now. 刚才我们在体育馆。
2、在表示过去某个时间里发生的动作，用动词的过去式构成。如：
I visited my uncle yesterday. 昨天我拜访了我的叔叔。
3．各种句式
（1）一般过去时的肯定陈述句：
主语 ＋ 动词过去式 ＋ 宾语或表语。
He worked in Shanghai ten years ago.
（2）一般过去时的否定句：
a．主语 ＋ didn’t ＋ 动词原形 ＋ 宾语。 (did + not = didn't)
He didn't do morning exercises yesterday.
b．主语 ＋ wasn’t/weren’t ＋表语。(was + not = wasn't were + not = weren't)
He wasn't an English teacher ten years ago.
（3）一般过去时的一般疑问句：
a．Did ＋ 主语 ＋ 动词原形 ＋ 宾语 ？
Did you study English in 1990 ?
b．Was/Were + 主语 ＋ 表语 ？
Was he a pupil five years ago ?
（4）一般过去时的特殊疑问句：
a．特殊疑问词 ＋ did + 主语 ＋ 动词原形 ＋ 宾语？
Where did your parents live five years ago？
What did you do last Sunday？
b．特殊疑问词 ＋ were/was ＋ 表语？
Who was at the zoo yesterday?