my grandfather is fond of talking about the good old days,as is often the case with old people.这是什么从句?为什么?没让你翻译！

My grandfather is __ the yellow car. my grandfather is seventy 划线部分提问 That man is my grandfather的问句 look my grandfather is() in the (). My grandmother and grandfather is old 找错 That is my grandfather.的意思 A:This is my grandfather B:_______ 填空 This is my grandfather 下一句接什么 This is my grandfather.He is my (parents') father.对不对 ?! My grandfather is the oldest in my family.就划线提问.（提问My grandfather) My grandfather is my father's father (一般疑问句） My grandfather is 80,but he is still __ (heath). there is a lot fo butterflies in my stomach? My grandfather is reading the newspaper改为否定句 the man is my grandfather改为一般疑问句 My grandfather thinks Beijing O_ is very interesting.填啥? Tomorrow is my grandfather's ______（eight-nine) birthday This year is the ( ) (seventy) birthday of my grandfather.