文档介绍:一般过去时
一.意义:表示过去某个时间发生的事情或存在的状态. 常与一般过去时态连用的时间有:
yesterday,  yesterday morning (afternoon, evening…)    last night (week, month, year…),
a moment ago , a week ago, three years ago…    just now, 
二.构成及变化
1. Be动词在一般过去时中的变化:
am 和is在一般过去时中变为was。(was not=wasn’t)
are在一般过去时中变为were。(were not=weren’t)
带有was或were的句子,其否定、疑问的变化和is, am, are一样,即否定句在was或were后加not,一般疑问句把was或were调到句首。
  肯定句  :  主语 + 动词的过去式 .     I watched a film last Sunday.
否定句   : 主语+ didn’t + 动词原形.     I didn’t watch a film last Sunday .
一般疑问句:Did + 主语 + 动词原形 ?
Did you watch a film last Sunday? Yes, I did . No , I didn’t .
特殊疑问句:疑问词+ 以did 开头的一般疑问句 ?   What did you do last Sunday?
三. 动词过去式变化规则:
1.       规则动词的过去式
(1)一般在动词原形末尾加– ed  helped ,looked ,  played ,  worked ,  listened……
(2)结尾是辅音字母+不发音的e,加 – d
lived  hoped  use---used  like --- liked  tasted  loved  closed
(3)双写末尾的字母,再加—ed   stop---stopped    plan---planned
(4)结尾是辅音字母+y , 先变“y”为“i”,再加—ed
study---studied  carry ---carried  cry --- cried   try---tried
2.       动词过去式的读音规则
(1)在轻辅音后加ed读轻辅音/t/    asked  cooked  worked   looked   talked   picked
watched   passed   jumped   helped  surfed 
(2)在浊辅音及元音后加ed读浊辅音/d/ 
lived   listened   closed  opened 
stayed   watered  played  
(3)在/t/ /d/ 之后读 /id