学习如钻探石油，钻得愈深，愈能找到知识的精髓。
So heavy is the box that he cannot carry it.
（5）用于省略if的虚拟条件句中，将had, were, should提前，如， Were I you, I wouldn't do that. Had he come, we would have won. （6）用于某些表示祝愿的句中，如， May you be happy for ever. II．例题
例1、Not only ____ this machine but ____ it.
A. can he run……can he repair B. can he run……he can repair C. he can run……he can repair D. he can run……can he repair 解析：该题答案为B，在not only……but (also)句型中，只有but前面的部分倒装，but后面仍是正常语序。
例2、____, it is quite easy to drill a hole in it with laser（激光）. A. Hard although the diamond B. Hard as the diamond is C. As the diamond is hard D. Has hard is the diamond 解析：该题答案为B，在让步状语从句中，从属连词as可以表示though，但要用倒装语序。
例3、Only in this way ____ to improve the situation there. A. can you hope B. you can hope C. hope can D. you hope 解析：该题答案为A， 省略 I．要点 有时为了避免重复，使语言简练紧凑，在不损害结构或引起误解的原则下，往往省去一个或多个句子成分或词语。 １、 固定习惯用词。如：
No smoking! Thanks s lot!等。 2. 简单句中的省略
（１） 口语中，一、二、三人称的主语，有时还包括谓语都可以省略。
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学习如钻探石油，钻得愈深，愈能找到知识的精髓。
如：（It is）Nice to see you! (This is) Li Ming speaking.
（２） 所有格后的名词如为住宅、商店、工矿、教堂等可以省略。如： I'm going to visit Tom's (house). I met him at the tailor's (shop).
（３） 两个或两个以上的动词不定式并列在一起时，第一个不定式带to，后面的不定式可省to.
如: His job is to clean and mend the machine. （４） 主（宾）语补足语中的to be常省略。
He was considered (to be) the best student in the class. （５） There be结构中 there be可同时省略，或只省略there.如：(Is there) Anything wrong?
（６） 表示年龄的years old, 表示钟点的o'clock, minute等常省略。 如：What time is it now? It's ten (o'clock). 3从句中的省略
（１） 宾语从句，以which, when, where, how和why引起的宾语从句谓语与主句谓语如相同，可省略从句中全部谓语，甚至主语也可省略，仅保留wh－一词。如：
He will come, but we don't know when (he will come). He didn't come, I wondered why (he didn't come). （２） 定语从句中可省略作宾语的关系代词，如：
The man (whom) I saw in the street the other day is my teacher. （３） 状语从句，在时间、地点、让步、方式、条件状语从句中，从句主语与主句主语一致，或从句主语是it，则be动词及其主语常可省略。如： I'll tell him that when (it is) possible. I won't go there unless (I'm) invited.
欢迎访问南京市网上家长学校·教育超市
www.jiangsuedu.net/nj