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一般疑问句:Did+主语+do?
特殊疑问句:特殊疑问词+did+主语+do?
动词-ed形式的构成
在动词后加-ed
want
answer
wanted
answered
以字母e 结尾的动词,只+d
move
die
moved
died
“ 辅音字母+y ” ,变y 为i, 再+ed
carry
cry
carried
cried
重读闭音节以一个辅音字母结尾的,双写+ed
stop
plan
stopped
planned
不规则过去式
get
got
have
had
are
were