请问老师:For a moment Harry imagined coming here with Dumbledore, of what a bond that would have been, of how much it would have meant to him.这句话中黑体部分的of what和of how是什么结构?
...”somebody在前文中出现,后面如果要用一个代词指代前面的somebody,用them。那么其他单词呢,比如 somebody, anybody, nobody, person,everyone,anyone 等不定代词,如果前文中出现,后文用中 they 还是 he 还是 she 指代呢?