动词过去式变化及ed的发音规则.ppt

动词过去式变化及ed的发音规则.ppt动词过去式变化规则及ed的发音规则
动词过去式变化规则
一、规则变化
1、一般情况下,动词词尾加-ed, 如:work—worked play—played want—wanted ask—asked
2、以不发音的-e结尾动词,动词词尾加-d, 如:live—lived move—moved taste—tasted
3、以“辅音字母+y”结尾的动词,把y改成i, 加—ed, 如:study—studies try—tried copy—copied carry—carried
4、重读闭音节动词,双写词尾辅音字母,再加—ed, 如:stop—stopped
二、不规则变化
is am—was are—were do—did have has—had go—went sit—sat sing—sang drink—drank give—gave
write—wrote ride—rode drive—drove
draw—drew grow—grew know—knew
get—got forget—forgot
keep—kept sleep—slept
can—could shall—should will—would
过去式与动词原形一样:let—let must—must put—put read—read
什么是清辅音和浊辅音??
。发音时声带不震动、送气的叫清辅音,
p/p/、t/t/、k/k/、f/f/、th /θ/、
s/s/、sh/∫/、ch/t∫/、c/ts/、tr/tr/,再加上h/h/ ,合计12个。;
、不送气的叫浊辅音,b/b/、
d/d/、g