B 开头单词
be advanced in years 年迈龙钟
be admitted to 加入；获准做某事
be adjacent to 与…毗连的；接近…
be adequately fed 填饱肚子
be adequate to 充分满足,胜任
be adept in v. 擅长
be adept at v. 擅长
be addressed 得到处理（addressed是address的过去分词） 得到解决（addressed是address的过去分词）
be addicted to 对…上瘾；沉溺于
be adapted to the environment 随乡入乡
be adapted to vt. 适合于（适应）
be adapted from 根据......改编（adapt from的被动式） 改编自......（adapt from的被动式） 由......改编而成（adapt from的被动式）
be adapted for 适宜，为…改编
be acquainted with each other 相互熟悉的 相识 互相认识
be acquainted with v. 与...相识；了解
be acknowledged as 被承认是（acknowledged是acknowledge的过去分词）