2.2 重点句型语法剖析-2018-2019学年高二英语上学期人教版选修六同步复习全攻略

重点句型语法剖析 三、重点句型剖析 1. reason＋从句 【教材原句】There are various reasons why people write poetry. 【方法规律】reason常用句式： the reason后是用why或for which还是用that或which，取决于其在从句中所承担的句子成分。缺少主语、宾语、表语用that 或which，缺少状语用why或for which。例： The reason why he didn’t come was that he was ill. 他没来的原因是他病了。 That’s the reason why she spoke. 这就是她讲话的原因。 [即学即练] 用适当的关系词填空。 (1)The only reason __________ I came was __________ I wanted to meet your friends. (2)The reason for the party is __________ it’s Sue’s birthday. (3)Is this the reason __________ he explained at the meeting for his carelessness in his work? (4)One reason for her preference for city life is __________ she can have easy access to places like shops and restaurants. 四、重点语法剖析 虚拟语气 (II) (一)名词性从句中须用虚拟语气的情况 1. 用于主语从句中 (1)It is + adj. + that从句 当it作形式主语，当描述主语的形容词是advisable，critical，crucial，desirable，essential，imperative，important，incredible，inevitable，necessary，strange，urgent等时，后面的主语从句中多用虚拟语气，即用should+动词原形，should常省略。 It is essential that this mission not fail. 这项任务不失败至关重要。 It was necessary that some immediate effort be made. 做出一些立即的努力是必要的。 (2)It is + V-ed + that从句 在这种句型中，动词通常为order，command，suggest，advise，request，require，demand等，后面的主语从句多用虚拟语气，即should+动词原形，should常省略。 It’s suggested that the meeting (should) be put off till next week. 据建议会议被推迟到下周。 It was ordered that the wounded soldiers be sent to the field hospital at once. 据命令受伤的士兵被马上送往战地医院。 It is desired that we (should) get everything ready by tonight. 希望一切在今晚前准备就绪。 注意：“坚决要命”类动词所接的四种名词性从句（主从、宾从、表从、同位语从句）中用法都如此。“坚决要命”：insist，advise，suggest，propose，decide，require，request，desire，demand，order，command等。 (3)It’s time + that从句 本句型中that可省略，time可由high、about修饰，从句中的谓语动词有两种形式，或者用动词的过去式(be用were)，表示与现在相反；或者用should + 动词原形(should不能省略)，表示与将来相反。此句型为虚拟语气句型，表示“某人该做某事了”。含有该事早该去做而未做，现在去做似乎都为时已晚的意思。 It’s high time that the article were published. 发表这篇文章是适时的。 It’s time you should do cleaning. 你该去打扫卫生了。 注意：本句型必须与“It(This) is (was) the first (second,...) time +that从句区别开来。 It is the first time that I have been on the pla