(I)规则动词的过去式变化规则 (1)一般情况下,动词词尾加 -ed ,如:worked played wanted acted (2)以不发音的 -e 结尾动词,动词词尾加 -d,如:lived moved decided hoped (3)以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如:studied tried copied just (4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如:stopped dropped planned dotted dripped
基本结构