buy(ing式)sing(ing式)she(宾格)five(序数词)is not(缩写形式)答:楼主您好!①buy-buying 除了这个外还有许多直接加ing形式的。比如:go-going, work-working, study-studying, look-looking,do-doing,eat-eating,play-playing,read-reading,wash-washing,plant-planting,borrow-borrowing,pick-picking,paint-painting,cry-crying,took-tooking (v.拿,占领,接受) ...