must、should、think和believe 有什么区别?
问题描述:
must、should、think和believe 有什么区别?
能否举例说明这些单词的句子?谢谢
答
1、must必须,should应该,它们都是情态动词.与can,may,Could用法相同,它们都不能独立作谓语,只能和实意动词一起用,表示能力、情态、愿望等意义.She can dance.He can't sing.We must go to school now.You must do yo...