edith thought how difficult it was to choose a  edith thought how difficult it was to choose a suitable christmas present for her father how difficult it was to?这是什么用法?

  edith thought how difficult it was to choose a  edith thought how difficult it was to choose a suitable christmas present for her father how difficult it was to?这是什么用法?
  edith thought how difficult it was to choose a
  edith thought how difficult it was to choose a suitable christmas present for her father how difficult it was to?这是什么用法?

  edith thought how difficult it was to choose a  edith thought how difficult it was to choose a suitable christmas present for her father how difficult it was to?这是什么用法?
精译:Edith认为给她父亲挑选一件合适的圣诞礼物实在是太难了.
how difficult it was to在句中是宾语从勺的倒装结构,it作形式主语指代不定式短语即to choose.