一般直接加,“啞e”去e加,“重閉”雙寫加,“輔y”改i加。一般直接加,即在動詞后直接加ed;以不發(fā)音的字母e結(jié)尾的動詞直接加d(或去掉不發(fā)音的e,再加ed);重讀閉音節(jié)(必須是一個短元音加一個輔音字母)結(jié)尾的動詞,要先雙寫結(jié)尾的輔音字母,再加ed;以輔音字母加y結(jié)尾的動詞,先將y改為i再加ed。
動詞加ed的規(guī)則(1)一般情況下,動詞詞尾加ed,如:worked played wanted acted
(2)以不發(fā)音的e結(jié)尾動詞,動詞詞尾加d,如:lived moved decided declined hoped judged raised wiped
(3)以輔音字母+y結(jié)尾的動詞,把y變?yōu)閕再加ed,如:studied tried copied justified cried carried embodied emptied
(4)以一個輔音字母結(jié)尾的重讀閉音節(jié)動詞,雙寫詞尾輔音字母,再加ed,如:stopped begged fretted dragged dropped planned dotted dripped
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