这些词的ing形式分别是,
playing,reading singing jumping doing 直接加ing
writing taking,去e加ing
swimming,双写最后一个辅音字母加ing,重读闭音节。
这些词的现在分词(或成为动名词)形式为:
playing,reading,writing,singing;
jumping,swimming,taking,doing。
playing
reading
writing
singing
jumping
swimming
taking
doing
running
sleeping