[名校联盟]广西桂林市十九中高三英语复习：IT的用法及强调句

. careful person. 2005.12.11 zxxkw Summary The use of “it” for emphasis 可被强调的部分 除谓语之外的句子各成分。 基本句子结构 It is/was＋被强调部分＋that/who/whom +句子的遗留部分 备注 it既可强调现在的情况，也可强调过去的情况。 Eg: It was we who/ that called on Professor Wang at his office this morning. It was Professor Wang whom/ that/ who we called on at his office this morning. We called on Professor Wang in his office this morning. we Professor Wang It was in his office that we called on Professor Wang this morning. It was this morning that we called on Professor Wang in his office. We called on Professor Wang in his office this morning. in his office this morning 1. It is on this arable land that the farmers produce food for the whole population of China. 2. It was from the early 1990s that scientists started to develop new techniques to increase agricultural production without harming the environment. zxxkw 怎样判断强调句?--- 若是强调句，去掉'It be… that’ 还应是一个完整的句子。