《Chinese people invented paper》PPT课件3
《Chinese people invented paper》PPT课件3第2页

动词过去式的规则变化

play- clean- phone- listen- stay- watch- finish- wash- dance-

paint- print- invent-

played cleaned phoned listened stayed watched finished washed danced

painted printed invented

〔d〕

〔t〕

〔id〕

轻对轻 浊对浊 以”t”结尾读/id/