able a.能够，会；能干的；聪明的
【搭】be able to do sth. 有能力干某事
【辨】be able to 和 can。be able to 有各种时态变化，can 除有过去时变化外，不能有其他
时态的变化。如：I have not been able to go to work for three days．我都三天没能去上班了。
He could swim very well at that time．他那时游得很好。
［例］I am afraid I won’t be able to visit you on Sunday. 恐怕我无法在星期日来拜访你了。
abandon v.放弃；抛弃，离弃
【搭】be able to do sth. 有能力干某事
【辨】be able to 和 can。be able to 有各种时态变化，can 除有过去时变化外，不能有其他
时态的变化。如：I have not been able to go to work for three days．我都三天没能去上班了。
He could swim very well at that time．他那时游得很好。
［例］I am afraid I won’t be able to visit you on Sunday. 恐怕我无法在星期日来拜访你了。
abandon v.放弃；抛弃，离弃
