语法复习五：强调句、It的用法、省略和插入语

一、强调句
（一）强调句句型
 1、陈述句的强调句型：it is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who（当强调主语且主语指人）+ 其它部分。
 e.g. it was yesterday that he met li ping.
 2、一般疑问句的强调句型：同上，只是把is/ was提到it前面。
 e.g. was it yesterday that he met li ping?
 3、特殊疑问句的强调句型：被强调部分（通常是疑问代词或疑问副词）+ is/ was + it + that/ who + 其它部分？
 e.g. when and where was it that you were born?
 4、强调句例句：针对i met li ming at the railway station yesterday.句子进行强调。
 强调主语：it was i that (who) met li ming at the railway station yesterday.
 强调宾语：it was li ming that i met at the railway station yesterday.
 强调地点状语：it was at the railway station that i met li ming yesterday.
 强调时间状语：it was yesterday that i met li ming at the railway station.
 5、注意：构成强调句的it本身没有词义；强调句中的连接词一般只用that, who，即使在强调时间状语和地点状语时也如此，that, who不可省略；强调句中的时态