10个单词 able, about, above, baby, back, backache, cabbage, caf, cake, daily 1. able adj. 能够;有能力的,能干的 【示例1】明天他能来。He will be able to come tomorrow. 【示例2】约翰 史密斯的确是位能干的工程师。John Smith is really an able engineer. 【示例3】由于他病了,他不能来了。He is not able // unable to come since he is ill. 【比较】be able to和can:can只有现在时和过去时(could)两种形式,没有完成时和将来时,在shall, will, have等后面要用be able to;can不能和be able to连用;can表示客观上具有的能力,但不一定去做,而be able to表示人通过努力或各种手段可以达到的能力;在过去时中,could表示具有能力,但不一定做了,而was/were able to则表示成功地做了。 【示例4】我们将能够按时到达那里。We shall be able to get there on time. 【示例5】我没能找到丢失的钢笔。I havent been able to find my missing pen. 【示例6】他能够从火里逃脱出来,但是他没能逃出来。He could escape from the fire, but he wasnt able to. 【示例7】He was ill, but he was still able to get a high mark in the test.他虽然病了,但还是能在考试中得高分。 |