—usedasSubjectandObjectUnit2GrammarHaveyoueverseenthesesigns?ParkingSpittingLitteringSmokingVingformsVing的形式你知道吗?那么简单,谁不知道。是由动词末尾加-ing形式构成V+-ing完成下面的句子并判断V-ing在句子中充当什么成分。______________ismyfavouritesport.Playingfootball主语Mysisterenjoy_________aloneontheseashore.standing宾语Thecartoonis_________.amusing表语Americaisadevelopedcountry,whileChinai...