基本信息
◆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.
