be able to能接动词不定式的被动形式吗?
问题描述:
be able to能接动词不定式的被动形式吗?
答
can/could/be able to用法详解 can / could / be able to 被用来谈论能力、感官能力和可能性.它们还可用于表示允许做某事.can / could 叫做情态动词,be able to为半情态动词.can和could接不带to的动词不定式,如:can...