1、在一篇短文中，如果句子结构要么是“主谓宾”，要么是“主系表”，则显得很单调，读起来乏味。若对简单句进行一下转换，使其主语灵活，句子结构活泼，则给人的感觉就大不一样。简单句之间的转换有下面三种方法：一、转换句子结构例 李东住在南方。他的家乡经常下雨。一般：Li Dong lives in the south.It often rains in his hometown.较好：Li Dong is from the south.There is a lot of rain in his hometown.分析“一般表达”中的两个句子均是“主谓”结构，比较单调。把它们分别转换为“主系表”结构和the
2、re be句型后，句子就显得比较活泼。例 你每天帮我学英语。你太好了！一般：You help me study English every day.You are very kind.较好：Its very kind of you to help me learn English every day.较好：How kind of you to help me learn English every day!分析“一般表达”句子之间的关系松散，转换为it作形式主语或感叹句后句子读起来很流畅。二、转换句型写作中常用于转换的三个重点句型：1there be句型there be句型也是简单句中的一种常
3、用句型，在作文中经常使用。在there be句型中，有时there be还可以换用there seems/seemed to be(似乎有)，there happened to be(碰巧有)，there may/might be(也许有)，there must be(肯定有)，there cant be(不可能有)，there ought to/should be(应该有)等。我家有五口人。There are five people in my family.操场上碰巧有很多人。There happened to be a lot of people on the playground.2感
4、叹句感叹句是作文中很有用的一种句型，常见的感叹句有两种：句型1 What(冠词)形容词名词主谓结构感叹号句型2 How形容词或副词主谓结构感叹号What an interesting film(it is)!How interesting a film(it is)!3强调句型强调句型也是作文中常用的一种句型，强调句型的结构是：It is/was被强调部分that/who原句其他部分。I met my friend in the street yesterday.It was I who/that met my friend in the street yesterday.(强调主语)It w
5、as my friend that I met in the street yesterday.(强调宾语)It was in the street that I met my friend yesterday.(强调地点状语)It was yesterday that I met my friend in the street.(强调时间状语)注意：强调时间和地点时，不能用when或where，要用that。三、转换词语例 杰克是我们学校的学生。他学习特别努力。一般：Jack studies in our school.He studies very hard.较好：Jack studies in our school.He works hard at his lessons.分析“一般表达”中的谓语重复使用study，显得呆板。词语转换后，句子就“活”起来了，读起来有滋有味。例 妈妈匆匆忙忙去上班，连早餐都没吃。一般：Mother went to work in a hurry.She didnt have breakfast.较好：Mother went to work in a hurry without having breakfast.分析“一般表达”中的两个简单句之间关系松散，使用介词短语进行转换后使句子内部结构紧凑，读起来一气呵成。