句型转换综合考查学生对课本知识点的理解、记忆和灵活运用的能力，它能较好地反映出同学们对英语基本句型的熟悉和运用程度。其考查的主要形式有三种： 一、 按要求转换句型
做这种题，首先应明确每一种时态、语态的语法结构，疑问句及否定句的构成，当然还要掌握一些特殊用法。
1.肯定句、否定句、疑问问、感叹句、祈使句之间的转换
①My father put his bike under the tall tree.(改为否定句)(2006年宿迁市)
My father ______ ______ his bike under the tall tree.(didn’t put)
②Miss Green regards her pet as her good friend.(改为一般疑问句)(2006年甘肃省)
______ Miss Green______ her pet as her good friend?(Does, regard)
③Most information on the Internet is in English,______ ______ ?(改为反意疑问句) (2006年甘肃省)(isn’t it)
④People on the hill are working very hard. (改为感叹句)(2006年苏州市)
______ ______ people on the hill are working!(How hard)
2.简单句与复合句之间的转换
①Kate won’t send e-mails to her e-friends this evening. I won’t, either. (2006年盐城市)
______ Kate ______ I will send e-mails to our e-friends this evening.(Neither, nor)
②Mrs. Green gave birth to Lucy and Lily in 1992. They’re twin sisters. (2006年盐城市)
Lucy is the ______ age ______ Lily. (same, as)
3.主动语态变为被动语态
①Students can’t take magazines out of the reading-room.(改为被动语态)(2006年重庆市)
Magazines can’t ______ ______ out of the reading-room.(be taken)
②The villagers built a watchtower on the top of the hill, so they could find the fire in the forest early. (改为被动语态)(2006年山东省)
A watchtower ______ ______ on the top of the hill, so the fire in the forest
______ early.(was built， could be found)
二、 对划线部分提问
这类题要求把陈述句变成特殊疑问句。首先根据划线部分确定疑问词，然后变成一般疑问句，应注意时态、助动词的变化。
疑问词的种类有：①疑问代词：who，whom，what，whose，which。②疑问副词：when，where，how，why。③短语：how many，how much，how long，how far，how soon，how often，how many times，how old，what colour等。疑问代词在句子中作主语或主语的定语时，其句子结构与陈述句相同，不加助动词；疑问代词在句子中作其他成分时，都必须放在句首。如：
①Kate usually goes to her office by bike.(对划线部分提问)(2006年济南市)
______ ______ Kate usually ______ to her office?(How does, go)
②I collect toys because they are beautiful. (对划线部分提问)(2006年重庆市)
______ ______ you collect toys?(Why do)
三、同义句转换
一般来说，这类题目有以下四种情况：
1．简单句之间的转换
简单句之间的转换通常有：用同义词(词组)、反义词(词组)替换相关的词语，或用意思相同的句型替换。如：
①My parents prevent me from playing computer games.(改为同义句)(2006年合肥市)
My parents don’t ______ me ______ play computer games.(allow, to)
②Alice didn’t know how she could draw horses well. (改为同义句) (2006年重庆市课改实验区)
Alice didn’t know how ______ ______ horses well.(to draw)
2．复合句之间的转换
复合句之间的转换通常用不同的词改写或改变句子结构。如：
①Ann has decided to be a vet when she grows up. (改为同义句)(2006年桂林市)
Ann has ______ a ______ to be a vet when she grows up.(made, decision)
②Yao Ming received thousands of letters from his fans after his leg was broken. (改为同义句)(2006年盐城市)
Yao Ming ______ ______ thousands of his fans after his leg was hurt.(heard from)
3．复合句转换成简单句
复合句转换成简单句多用动词不定式、介词短语替换从句或用相同的句型替换。如：
①It is three years since I became a middle school student. (改为简单句)(2006年孝感市)
I ______ a middle school student three years ______ .(became, ago)
②If you work hard, you will do well in physics. (改为简单句)(2006年孝感市)
______ ______ , and you will do well in physics.(Work hard)
4．并列句或两个简单句转换成复合句
这类题目一般运用并列连词、不定式或一些关联词。
①“Don’t spend too much time on computer games.” Mr. Wang said to Tony.(改写句子，句意不变)(2006年济南市)
Mr. Wang ______ Tony ______ ______ spend too much time on computer games.(told, not to)
②Be quick, or you will be late for school again. (改写句子，句意不变)(2006年泰州市)
______ ______ be quick, you will be late for school again.(If don’t)
【技巧点拨】
1.注意时态。
2.句子的成分不变。原句的句子在改变句型时仍不可缺少，否则句子不完整，但有一个例外，在陈述句改为感叹句时，要增加句子成分，感叹词what和how分别为按句子的要求而增加的定语或状语，句子其他成分不变。
3.反复推敲，确保无误。改变后要看看意思是否与要求相符，有没有语法和习惯用法方面的错误。