爷爷,外公用英语怎么说

"爷爷"和"外公"在英语中分别是grandfather和grandfather-in-law。它们来源于中世纪的英语，grandfather是"祖父"的意思，grandfather-in-law则是指儿媳妇的父亲。

例句：

My grandfather always tells me stories of his youth.
(我的爷爷总是告诉我他年轻时的故事。)
I never met my grandfather-in-law, but I've heard he's a nice man.
(我从未见过我的外公，但是我听说他是一个好人。)