考生要想在书面表达中快速提分，记住策略之一：使用非谓语动词改写从句 Non-finite Verbs in Writing
目标：掌握非谓语改写从句的方法与步骤；
目的：使书面表达的句子成更为简洁、紧凑的高级简单句。
重点：三种非谓语形式所表达的内容；
难点：不同句式的改写方法。
改写从句的方法与步骤：
1、省去从句前的连词。因使用非谓语变成了简单句，不需要连词了。
2、判断从句中的主语是否与主句的主语一致，一致的话就省略，不一致的话，以主语的格式保留下来，通常被称之为“独立主格”。
3、判断从句中的主谓之间关系：主动还是被动。主动用-ing形式，被动用-ed形式。
实操
(1) Before they graduated from the university, they had found the job in the company. ----Graduating from the university, they had found the job in the company.
解析：本句中before是引导时间状语从句的连词，省略。从句中主语they与主句主语they一致，省略。They 与graduate 之间的关系是主动，即可使用--ing形式。
(2) If you park your car in the wrong place, a traffic policeman will soon find it. ---You parking your car in the wrong place, a traffic policeman will soon find it.
解析：本句中If是引导条件状语的连词，省略。从句中主语you与主句主语a traffic policeman不一致，不能省略。You 与park 之间的关系是主动，即可使用--ing形式。You 在此被称为独立主格结构。
(3) When the city is seen from the mountain, it looks even more beautiful. ---Seen from the mountain, the city looks even more beautiful.
解析： 本句中When是引导时间状语从句的连词，省略。从句中主语the city与主句主语it一致，省略。由于主句的主语it 是指代the city，如果city省略掉，指代会产生不清的问题。所以在改写时可以作适当的主语转移。从句中the city与is seen谓语之间的关系是被动，即可使用--ed形式。
（4）They hurried up to the bus-stop so that they could catch the bus. ----They hurried up to the bus-stop in order to catch the bus.
解析： 本句中so that是引导目的状语从句的连词，省略。从句中主语they与主句主语they一致，省略。因非谓语中动词不定式结构具有表目的的作用。故使用to do结构。
改写练习练习：
1. Although he was told to stop, he kept on working.
2. Because she knew English very well, she translated the sentences without no difficulty.
3. After he had been shown many times, he still didn’t understand the operation of the computer.
4. If time permits, they could do it better.
参考答案:
1. Told to stop, he kept on working.
2. Knowing English very well, she translated the sentences without no difficulty.
3.Having been shown many times, he still didn’t understand the operation of the computer.
4. Time permitting, they could do it better.
策略小结：
1.连词、主语要省略
2不同主语要保留
3.主谓关系最重要，主动被动要分清.
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