(4)用在肯定句中,表示某人/某物一时的特点,可译为“有可能,有时会”。 Even experienced teachers can make mistakes. 即使是有经验的教师也可能出错。 [温馨提示] can和be able to的异同 (1)can表示能力,只用现在时和过去时(could),而be able to有各种时态。 They will be able to tell you the news soon. 他们很快就能告诉你那个消息了。 (2)表示成功地做了某事,只能用was/were able to,而不能用could。 The fire spread through the hotel very quickly,but everyone was able to get out. 大火在整个宾馆内蔓延开来,但每个人都成功逃出来了。