五个元音字母是：a, e, I, o, u,其余21个是辅音字母。,_, _,_是be动词,am is are,_叫现在分词,单词后面有ing,现在进行时=_+_,be动词 现在分词,动词变现在分词的规则1：,eat,eating,动词,现在分词,wash,washing,paint,painting,play,playing,1.直接在动词后面加ing,mak,e,ing,write,writing,动词,现在分词,make,making,like,liking,come,coming,take,taking,动词变现在分词的规则2：,2.以不发音的字母e结尾的单词，去掉字母e，再加ing,run,n,ing,run,动词,现在分词,running,swim,动词变现在分词的规则3：,辅,元,辅,swimming,3.“辅+元+辅”结构的动词，先双写最后一个字母，再加ing,
