一般过去时态
(a) be 动词的过去式：
I/He/she/it was(not)….
You/we/they were….
一般疑问句was, were 放在句首。
(b) 动词过去式：
肯定句： I watched cartoons.
She visited the zoo.
一般疑问句： Did you read book last night? Yes, I did. No, I didn’t.
Did she clean the desk just now? Yes, she did. No, she didn’t.
否定句： They didn’t go the the part yesterday.
He didn’t make model ships last week.
(3)动词过去式的变化：
规则动词的变化：
大多数动词，直接加ed: eg. planted,watered,climbed
以e结尾的动词加d ：eg. liked
以辅音 y 结尾的动词，y变i,加ed ：eg ： study—studied
元音加辅音结尾的动词，双写辅音加ed: eg: stop –stopped
不规则动词的变化：
is/am—was,are—were,do—did,have/has—had,make—made,fly-flew/u:/
eat—ate,take—took,run—ran,sing—sang,drink—drank 等等
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