she was going out shopping.为什么还要加out

she was going out shopping.为什么还要加out going shopping,为什么shopping还要加ing? The girl was shopping when she saw the alien get out.中get为什么 the girl was shopping she saw the ailen get out she was going to get out again 是什么时态 小学首字母填空One day she was out shopping w_____ she saw an old wo 英语选择Peter was going out shopping.He waited for a short time Linda was just going out shopping _____ the telephone rang.填 七下完形填空Peter was going out shopping.He waited for a short tim 连词成句：shopping,was,the girl,she,the alien,saw,get out,when Going out and shopping with friends is more fun.为什么用is? 完形填空（2）John was going out shopping.He＿1＿a short time before