写出下列单词的-ing形式中,并总结出规律

问题描述:

写出下列单词的-ing形式中,并总结出规律
①buy-( ) ②lie- () ③shop- () ④walk -()
⑤write- () ⑥call- () ⑦run- () ⑧drive- ()
规律:
①________________ ②________________
③________________ ④________________

buying
lying
shopping
walking
writing
calling
driving
以ie结尾的把ie变y加ing
重读闭音节结尾,双写末尾辅音字母加ing
以不发音e结尾,去掉e后加ing
其他直接加ing