plan, stop, nod
planned,stopped, nodded
planned,stopped, nodded
现在分词的构成
规 则
动词原形
现在分词
一般动词直接加—ing
ask, study, stand
asking, studying, standing
以不发音的—e结尾的动词，去掉e再加—ing
动词的各种形式
规 则
动词原形
一般现在时第三人称单数形式
一般动词加—s
rise, read, write
rises, reads, writes
以s,x,ch,sh或以o结尾的动词，加asses, pushes, watches, does, goes
词尾为不发音的e，加—d
like, live, love
liked, lived, loved
liked, lived, loved
词尾为“辅音字母+y”，改y为i，加—ed
try, study, cry
tried, studied, cried
tried, studied, cried
重读闭音节(一个辅音+一个元音)结尾，双写辅音后加—ed
come, take, write, become
coming, taking, writing, becoming
以重读闭音节（一个辅音+一个辅音）结尾，末尾只有一个辅音字母的动词，要双写辅音字母再加—ing
sit, begin, run
sitting, beginning, running
少数以—ie结尾的动词，先变ie为y，再加—ing
以“辅音字母+y”结尾的动词，改y为i，加—es
study, try, fly
studies, tries, flies
一般现在时第三人称单数的构成
规则动词过去式、过去分词的构成
规 则
动词原形
过去式
过去分词
一般动词加—ed
help, look, work
helped, looked, worked
helped, looked, worked
die, lie, tie
dying, lying, tying
以—ee，—ye等结尾的动词，直接加—ing
see, eye
seeing, eyeing