2015
高考英语北师大版一轮复习语法(7):专题七 情态动词和虚拟语气(讲解及答案)专题七 情态动词和虚拟语气 ◆情态动词的考查要点 1.can,be able to 和could (1)can和be able to都表示能力,意思上没多大区别。但can只有现在和过去时,而be able to则有更多的形式。但当成功地完成某一具体动作时,通常不用could而用was/were able to来表示。这时was/were able to 相当于managed to,表示经过一番努力,终于能够完成某事。 her mother can speak french. the wounded man was still able to get to the village and was saved by the villagers in the end. (2)表示猜测“可能”,一般用于