现在进行时动词变化规则
1、直接加ing：buying calling enjoying telling waiting working sleeping washing dressing starting eing cleaning cooking learning sweeping happening helping aning.wanting.being
2、去e加ing的（以不发音的e结尾的): driving taking leaving loving decorating giving
3、双写加ing的（以重读闭音节结尾并且末尾只有一个辅音字母的）putting shopping cutting
4、把ie去掉变成y再加ing :lie-lying
动词过去式变化规则：
苦瓜的英文
mamado1．一般在动词末尾加-ed，如：pull-pulled, cook-cooked
david choi2．结尾是e加d，如：taste-tasted
3．末尾只有一个元音字母和一个辅音字母的重读闭音节，应双写末尾的辅音字母，再加-ed，如：stop-stopped 投拍
4．以“辅音字母+y”结尾的，变y为i， 再加-ed，如：study-studied strawberry怎么读
5．不规则动词过去式：
am,is-was
谷歌金山词霸are-were
do-did
e-saw say-said
化妆品常识give-gave
ribbonget-got go-went come-came have-had eat-ate take-took
run-ran sing-sang put-put make-made read-read write-wrote draw-drew alliances>iorgane
drink-drank fly-flew ride-rode speak-spoke sweep-swept swim-swam sit-sat
