文档介绍：语法复****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。
. 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。
. 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?
. 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 。
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;强调句中的时态只用两种,一般现在时和一般过去时。原句谓语动词是一般过去时、过去完成时和过去进行时,用It was …,其余的时态用It is …。
(二)not … until …句型的强调句
1、句型为:It is/ was not until + 被强调部分+ that + 其它部分
. 普通句:He didn’t go to bed until/ till his wife came back.
强调句:It was not until his wife came back that he went to bed.
2、注意:此句型只用until,不用till。但如果不是强调句型,till, until可通用;因为句型中It is/ was not …已经是否定句了,that后面的从句要用肯定句,切勿再用否定句了。
(三)谓语动词的强调
1、It is/ was … that …结构不能强调谓语,如果需要强调谓语时,用助动词do/ does或did。
. Do sit down. 务必请坐。
He did write to you last week. 上周他确实给你写了信。
Do be careful when you cross the street. 过马路时,务必(千万)要小心啊!
2、注意:此种强调只用do/ does和did ,没有别的形式;过去时