一、强调句型1.强调句的基本形式为:It is/was+被强调部分+ that/who+其他部分。被强调成分为主语、宾语或状 语。当被强调部分指人时,用 that,who 均可,指事 物或情况时用 that(被强调的是时间或地点状语时,不 用 when,where)。 It was in the shop that I met her. 我是在商店遇到了她。2.强调句的句式变化 一般疑问句:Is/Was it+被强调部分+that/who... 特殊疑问句:What/Who/When/Where/How/Why+ is/was+it+that... What was it that made him change his mind? 是什么使他改变了主意。二、强调谓语动词 强调句型不能强调谓语动词,如果需要强调,用助 动词 do,does 或 did。 Do come this evening!今晚一定要来啊! He did be late for the meeting yesterday. 他昨天确实开会迟到了。 Tom does study hard now.汤姆现在学习的确很努力。[注意] 不能被强调句型强调的还有让步状语、比较状语、表语、since 或 as 引导的状语从句。三、几组易混句型比较1.强调句与“It is/was+时间+when 从句”。 在这种句型中 it 指时间,when 引导的是时间状语从句。 注意以下两种句型“时间”表达方式的不同。 It was at midnight that I got back home yesterday. 我昨天是半夜到家的。 It was midnight when I got back home yesterday. 我昨天到家时是半夜了。2.强调句型与“It is/has been+时间+since 从句”。 It is/has been ...since...表示“自从……以来已有……( 时间)”。注意以下两种句型的时态一般不同,句意也 不同。 It was two years ago that I began to learn English. 我是两年前开始学英语的。 It is two years since I began to learn English. 自从我开始学英语以来已有两年时间了。第一个句子为强调句型,强调的是过去的时间,用一般过去时;而第二个句子表示“从过去到现在已经有多长时间”,用一般现在时或现在完成时。但要注意强调句同样也可以用一般用心 爱心 专心1现在时。It is two hours that he spends on English every day.他每天花两个小时学英语。3.It+be+long+before 从句。这种句型有以下几种句式: It wasn't long before...不久以后就…… It won't be long before...不久就会…… It was (not) two years/days before...两年/两天后才 会……(用不了两年/两天就会……) 试比较: It was two years before he came back from abroad.(时间 状语从句) It was two years later that he came back from abroad. (强调句型)用心 爱心 专心2