when to start ? 含宾语从句的复合句变简单句时，还可用复合宾语，即宾语加宾语补助语来改写。如： I saw he went into the room just now . = I saw him go into the room just now . Edison’s mother found that he was a clever boy . = Edison’s mother found him clever . We heard that she was singing in English . = We heard her singing in English .

2、含状语从句的复合句变简单句时，常用以下方法：以 so…that 引导的结果状语从句常转换为 too … to 或 enough to 结构。如：He is so young that he can’t go to school . = He is too young to go to school . = He isn’t old enough to go to school . 另外还可通过结构和语态的转换来改写。如：I can’t finish the work if you don’t help me . = I can’t finish the work without your help . = I can’t finish the work unless you help me . We use computers in many ways . = Computers are used in many ways .

句型间的转换，要求对能够表达同一意义的常用句型结构了解甚透。如： It took me two hours to finish my homework . = I spent two hours in finishing my homework . If you don’t hurry , you will be late . = Hurry up , or you’ll be late .

还可利用词性转换来改写。如：There was a heavy snow here last night . = It snowed heavily here last night . Uncle Wang invented the machine . = Uncle Wang was the inventor of the machine .

四：热身练习：

(A) It’s good for your health to do exercise often .

(B) _____ exercise often can make you _____ .

(A) This picture looks the same as that one .

(B) _____ _____ ______ ______ the two pictures .

(A) Tom is taller than any other student in his class .

Tom is _____ _____ in his class .

(A) I’ll go to bed after I finish my homework .

I _____ go to bed _____ I finish my homework .

(A) Cross the bridge , you will find the building .

____ _____ the bridge , you’ll find the building .