Important grammar-.-强调句 It was I who stayed with my parents till they died. 作者想要强调的内容 It is green that they have painted the wall. It was he who broke the window. Important grammar- 强 调 句 It was I who stayed with my parents till they died. 作 者 想 要 强 调 的 内 容 It is green that they have painted the wall. It was he who broke the window