末尾只有一个辅音字母的重读闭音节词,双写该辅音字母,再加-ed stop
plan
fit stopped
planned
fitted stopped [stCpt]
planned [plAnd]
fitted [5fitid]
以-r音节结尾的词,双写r字母,
再加-ed prefer
refer preferred
referred preferred [prI`f:d]
referred [ri5fE:]
末尾只有一个辅音字母的重读闭音节词,双写该辅音字母,再加-ed stop
plan
fit stopped
planned
fitted stopped [stCpt]
planned [plAnd]
fitted [5fitid]
以-r音节结尾的词,双写r字母,
再加-ed prefer
refer preferred
referred preferred [prI`f:d]
referred [ri5fE:]