be left doing和be left to do怎么区别

be left doing和be left to do怎么区别 be doing和doing的用法区别 to be doing 和 doing的区别 be busy doing 和 be busy in doing 的区别? 用 be doing 和be doing to do 造句 三个 be+doing 求大神指点!翻译一下,谢谢! 1 the bag to hold 2 to be lef求大神指点!翻译一下,谢谢!1 the bag to hold 2 to be left holding the bag 英语leave的用法leave sb doing被动是不是sb be left doing? be away 和left 的区别 各举一个be+doing+while+be+doing和be+doing+when+did的例句,be最好为过去时 be said to be doing和be said to have been doing的区别 be going to be doing和will be doing表示的是什么意思? be doing和be going to的区别和用法!be doing和be going to的区别和用法 be worthy of 和 be worth doing 有什么区别? be afraid of doing 和 be afraid to do 区别 be easy to do和 be easy doing 的区别 be about to do和be about doing 区别 be allowed to do和be allowed doing 什么区别