2013-2014学年高中英语选修6：Unit4Globalwarming辅导训练-GRAMMAR.docVIP

第  PAGE 3 页 共  NUMPAGES 3 页 GRAMMAR 小词大用说it (二) 上一单元，我们复习了it作代词的基本用法，并学习了it作形式主语、形式宾语的用法。本单元我们主要正确理解和掌握it构成强调句型的用法。 【例句呈现】 请观察以下六组句子，注意归纳it构成强调句型的用法特征。 1. A. It was between 1996 and 2006 that great changes took place in our hometown. B. It was Professor Smith who gave us some advice on how to learn English well. 2. A. Was it because of his illness that he didn’t go to the cinema? B. Is it your brother who wants to join the army after graduation? 3. A. When was it that the Second World War broke out? B. What is it that your brother is most interested in? 4. A. It was not until yesterday that I heard about it. B. It was not until she took off her glasses that I realized she was a famous film star. 5. A. It is simply because I like it that I do it. B. It is what you do rather than what you say that matters. 6. A. It must be Peter who has told you the news. B. It might be for this reason that he has changed his mind. 【用法小结】 从上面的六组句子中，我们可以归纳出it构成强调句型的基本用法： 1. 强调句型的基本句式是“It is / was + 被强调部分 + that / who + 句子的其余部分”，它可以对句中除谓语动词以外的成分加以强调。如：第一组例句； 2. 从第二组例句可以看出，强调句型的一般疑问句形式是：Is / Was it + 被强调部分 + that / who + 句子的其余部分； 3. 从第三组例句可以看出，强调句型的特殊疑问句形式是：疑问词 + is / was it that + 句子的其余部分； 4. 从第四组例句可以看出，如果被强调的是not ... until ...引导的时间状语（从句），用“It is / was not until ... that ...”结构，此时not until不能分开； 5. 从第五组例句可以看出，强调句型也可强调状语从句、名词性从句等比较复杂的内容； 6. 从第六组例句可以看出，强调句型中，be前可使用表示推测的情态动词。 【特别提示】 1. 强调时间、地点、原因状语时，不能使用when, where, why代替that。如： It was in front of the post office that the traffic accident happened. It was about 600 years ago that the first clock with a face and an hour hand was made. 2. 强调主语时，谓语动词应与之保持一致。如： It is I who am to go there together with you. It was Mike and Mary who were praised at the meeting last night. 3. 强调主语或宾语且其为人称代词时，应注意其形式仍用主格或宾格形式。如： It was she who showed me to the headmaster’s office. It was her that the headmaster shook hands with yesterday. 4. 学会判断强调句型：一般来说，如果将一个句子中的强调结构it is / was ... that去掉，剩下的成分仍然能组成一个完整的句子，这个句子就使用了强调句型，否则就不是。如：