I love playing the piano 我喜欢弹钢琴. play后为什么要加ing? 希望能解释的详细一点.谢谢>>

i love playing on the computer in the study改为第三人称 I love playing the guitar what about your brotherhe did toohe does toohe alsohe too So you play in the school band too!I love playing in ours. I love Girl in Red skirt.She likes pI love Girl in Red skirt.She likes playing the piano In the evening I love sitting by the fire and playing my guitar.为什么用sitting和playing?解释下谢 P.I just love you. You are playing I still really love me? i love playing basketball as my after-class activities改错 I am（）.playing football playing the football play football i like playing the piano,playing ping-pong and swimming I math love the I Love The Rain I love the colour I love the people I love the I love the Who I Love The Rain Most of the girls love playing with d_______.