If you ___ (can) help me,I would be grateful.请说的完整一点,
问题描述:
If you ___ (can) help me,I would be grateful.
请说的完整一点,
答
could 过去式 虚拟语气
答
could
答
could 这里if是虚拟语气的用法 有would 所以用could (过去式)