the doctor did what he could to save it.为什么不是what he could do.还有t_英语解答

the doctor did what he could to save it.为什么不是what he could do.还有to,can后能加to 请帮帮

人气：482 ℃　时间：2020-03-30 19:41:07

解答

医生做了他所能做的一切去救它.
TO表示目的（去救它）,直接用原型就不包含这个意思了.
可以