playing
1 一般情况下，直接在动词后加－ing
work ---- working
sleep ----- sleeping
study ----- studying
2 动词以不发音的－e结尾，要去－e加－ing
take ----- taking
make ----- making
dance ----- dancing
3 重读闭音节的动词，要双写词尾字母，再加－ing
cut ----- cutting
put ----- putting
begin ------ beginning
4 以－ie结尾的动词，把变成y再加－ing
lie ----- lying
tie ----- tying
die ----- dying
好像没有你说的这种现象
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