My grandfather taking a walk with his dog after supper every day.为什么要填taking
问题描述：
My grandfather taking a walk with his dog after supper every day.为什么要填taking
答
应该不是taking吧，这样就没有谓语了
答
表示长期的一个动作。
填took 或 were taking
答
正在进行时吗
答
这句话错误
应该是： My grang father takes a walk with his dog after supper every day
答
不是taking,应该是takes
一般现在时