2013-2014学年高中英语选修6：Unit4Globalwarming辅导训练-it引领强调句的旗手.doc

第  PAGE 2 页 共  NUMPAGES 2 页 it——引领强调句的旗手 [温故知新] 上个单元我们学习了it 用作人称代词、非人称代词，形式主语、形式宾语的用法。今天我们来学习it用在强调结构中的用法。这也是高考的一个热点语法现象，你要用心学哦！ [句例呈现] 请观察下列句子，看看它们与原句“My father did the experiment in the lab yesterday evening.”有何不同，它们又有何共性呢？ 1. It was my father that / who did the experiment in the lab yesterday evening. 2. It was the experiment that my father did in the lab yesterday evening. 3. It was yesterday evening that my father did the experiment in the lab. 4. It was in the lab that my father did the experiment yesterday evening. [功能小结] 通过观察这四个句子我们发现：在It was 和that / who之间插入了单词或短语，它们分别是原句的四个成分（主语、宾语、时间状语、地点状语），且这四个句子都是It was ... that结构，我们把它们叫做it强调句型。 it强调句起的是强调句子的某一成分的作用。我们可以用it强调结构强调主语（句1）、宾语（句2）、时间状语（句3）、地点状语（句4）等。换句话说，此结构可以强调除谓语以外的所有句子成分。有些同学会问：句3和句4中的that可以换成when和where吗？当然不可以。只有在强调的部分是某人的时候，that才可以换成who或whom，其他情况只能用that。 [要点聚焦] 观察对比以下句子，看看它们各有什么特殊之处？ 1. It was at ten o’clock that we got home last night． 2. It was ten o’clock when we got home last night. 3. Was it at ten o’clock that we got home last night? 4. When was it that we got home last night? 5. I asked you when it was that we got home last night. 6. It was not until ten o’clock that we got home last night. 7. Could it be in the restaurant where you had dinner with me yesterday that you left behind your keys and wallet? [画龙点睛] ★ 对比句1和句2你会发现it的用法是不同的：句1为强调句，而句2并不是it强调结构，it指代的是时间。 ★ it强调句的一般疑问句形式（句3）、特殊疑问句形式（句4）及it强调结构作宾语（用陈述语序）（句5）。 ★ not until用在it强调结构中：It was / is + not until +时间状语+ that +其他成分（句6）。 ★ it强调结构和定语从句经常结合在一起（句7）。 [高考实例] 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 1. It was not until she got home ______ Jennifer realized she had lost her keys. (2006全国卷Ⅱ) A. when B. that C. where D. before 2. I just wonder ______ that makes him so excited. (山东2006) A. why it does B. what he does C. how it is D. what it is 3. It was with great joy ______ he received the news that his lost daughter had been found. (福建2004) A. because B. which C. since D. that Key: 1-3 BDD