whocantellmewhatisthedifferentbetweenshall/shouldcan/could?xD

问题：whocantellmewhatisthedifferentbetweenshall/shouldcan/could?xD

答案：↓↓↓

马霁旻的回答：

网友采纳　　shall是指应该去做某事,就是你不想去也要去做比如youshouldobeytrafficrule　　can表示有能力去做某事,但去不去就是另一回事了比如youcanswim