第1个回答 2010-12-26
am,is,are都是be动词,ing形式都是being,单三形式都是is
单三:babysits, bear, becomes, begins, builds, beats, brings, buys
ing: babysitting, bearing, becoming, beginning,building, beating, bringing, buying
希望对你有帮助
第2个回答 2020-03-11
1是去掉不发音结尾的e在加ing如come—coming
come,
coming
initiate,
initiating
indicate,
indicating
notice,
noticing
.....
2是双写结尾加ing如swim—swimming
put,
putting
get,
getting
let,
letting
......
3是直接加ing如play—playing
lay.
laying
say,
saying
ask,
asking
do,
doing
.....
一天一夜也写不完啊
。。。。