1、清念 /t/ ，即 ed 在清辅音后面念 /t/ ,例：finished helped passed cooked

2、元浊 /d/ ,即 ed 在元音，浊辅音后面念 /d/ ,例：borrowed enjoyed called moved

相关介绍

构成规则

1、一般在动词原形末尾加– ed look looked

play played

start started

2、结尾是 e 的动词加 -- d live lived

hope hoped

use used

3、末尾只有一个辅音字母的 stop stopped

重读闭音节词，先双写这个 plan planned

辅音字母，再加—ed trip tripped

4、结尾是“辅音字母+y”的动词， study studied

先变“y”为“i”再加—ed carry carried