Unit 4 Global Warming 学案 3 强调句结构一、常考的强调句结构是 it 引导的句子。It is (was) 被强调部分+ that (who) + 句子其他部分。此结构强调的成分仅限于主语，宾语和状语。It is from the sun that we get light and heat.It was not until I had read your letter that I understood the true state of affairs.典型例题1） It was last night ___ I see the comet.A. the time B. when C. that D. which答案 C. 强调句的结构是： It +be +强调部分 + that (who) + 主谓句。 强调句的连词只有两个，that 和 who。当强调的部分是人，且为句子的主语时，才用 "who"，其余用 that。原句： My father did the experiment in the lab yesterday evening.强调主语： It was my father who did the experiment in the lab yesterdayevening.强调宾语： It was the experiment that my father did in the lab yesterday evening.强调时间： It was yesterday evening that my father did the experiment in the lab. (注意不用 when)强调地点： It was in the lab that my father did the experiment yesterday evening.注意：1、强调句的连接词一般只用 that ； 强调人时，可用 who (主语) 或 whom (宾语).2、强调句的时态一般为“It was+…+that”二、 It is not until + 被强调部分 + that ...该句型也是强调句型。主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是 not ...until ... 的强调形式。 It was not until she took off her dark glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I realize she was a famousfilm star.= I didn’t realize she was a famous film star until she took off her darkglasses.三、强调句的疑问句句型强调句的一般疑问句句型：Is / Was +it +所强调的部分+that / who/ whom?特殊疑问句强调句型的构成：特殊疑问词+be+it+that+句子的其他部分(用陈述语序) 例如：When did you receive the gift？对特殊疑问词 when 做强调：When was it that you received the gift？注意此句中的 recei...
