1.规则动词在其原形后面加-ed:
to work-worked
2.以字母e结尾的规则动词,只加-d:
to love---loved
3.动词为单音节,以一个元音字母和一个辅音字母结尾 辅音字母双写,再加-ed Stop-stoppedAdmit—admitted
4.以y结尾的动词,在y 前为辅音字母时 Y 变为 I ,加 – ed Carry –carriedHurry –hurried
5.以y 结尾的动词,在y 前为元音字母时 加—ed Obey—obeyedEnjoy---enjoyed