Are you loving me?和Do you love me?的区别是什么.分别怎么回答? am are is 和do does did的区别又是什么?什么时候用be动词,什么时候用实义动词呢?例如为什么要说The machine h

Are you loving me?和Do you love me?的区别是什么.分别怎么回答? am are is 和do does did的区别又是什么?什么时候用be动词,什么时候用实义动词呢?例如为什么要说The machine helps them to put rice in bags不The machine are helps them to put rice in bags说,求指教啊!十分感谢!