小学英语过去式知识归纳
过去式是英语里面使用频率较高的一个知识点，小学英语过去式是小学生要掌握的知识，那么小学英语过去式的内容有哪些呢?下面由 为大家整理的小学英语过去式的相关资料，希望大家喜欢!
小学英语过去式知识归纳
一、概念
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。
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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;如：look→looked play→playe d;
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→stoppedplan→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→spoketake→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
三、句式变化
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(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)
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(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?毕业证明书
→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?