精选优质文档-倾情为你奉上情态动词.【情态动词的基本用法】1. can的基本用法： 表示体力或智力上的能力，即“能够，会”，可与be able to转换。例：He can speak English. = He is able to speak English. Can you play basketball? No, I cant. 如果表示将来具备的能力，要用will be able to。例：If I have a good sleep, I will be able to do the problem. 表示许可，主要用于口语，书面语一般用may。例：Can we go home now, please? No, you cant. You can only smoke in this room. You cant keep the library books for more than a month. 表示“可能”，与may同义，但一般用在疑问句中。例
