用be able to do be afraid of sth allow sb to do ask to do 用这些短语写一个小短文　几句话就行

用be able to do sth造句 be able to do sth 用be able to do sth造句要段小一点的 be able to do sth 等于什么 be able to do sth 意思 用法! 英语 翻译 be able to do sth 怎样用be able to do造句? be able to do sb.a faver Do not you be able to 用be able to造句 be able to do sth be able to do sth 的同义词是什么? Will she ( ) do the work?A.be able to B.able to C.is able to 用be coered of,be on,be able to do sth.,be in need of,be in trouble,be in bed,be free造句 be able to 句型如果接两个动词 应该怎么用想表达有能力做两件事 是be able to do sth.and to do sth.还是be able to do sth and do sth. be able to do和do有什么区别. be able to 用法 be able to中文 able to be assigned