二、句子的多样化

英语中，同一思想用不同句式表达，其效果会大不相同。要想写出好的文章，就要不断地变化句子的结构形式。

l、长短句交替使用

句子的长短是为表达思想服务的。英语短句结构简单，意思明白具有生动活泼而又干脆利索的表达效果，而长句结构复杂，信息丰富，能表达成熟的思想与复杂的概念。一味地使用长句或短句会使文章显得单调，乏味，从而影响文章的总体效果。科学地交替使用长短句使句子结构变化多样，不仅给文章带来顿挫起伏的语言美感，而且可以受到理想的修辞效果。请看下面的这段话：

She returned to her office.There was a note under the door. It was from Mr May.He said he was waiting for her in the coffee room.And he bad not found her sister.Hewas sorry to have missed her.

这段话用了一连串的短句，读起来单调呆板，平淡无味。为使文字更加生动，意思更加明确可改为：

When she returned to her office，the found a note from Mr May under the door.He said he was waiting for her in the coffee room and hadnt found her sister yet.Headded that he was sorry to have missed her.

修改后三个句子长短不一，读起来就给人以不同的感觉。

又如《大学英语》第一册第十课 Going Home，当汽车驶至 Brunsnick，车上的年轻人看见黄手帕时，出现了以下这两行文字：

Then，suddenly，all of the young people were up out of thelr seats，screamlng andshouting and cryin, doing small dances of joy.All except Vlngo.这两句话一长(23个词)一短(3个词)，彼此衬托互为凸现。第一句的两个and和四个-ing词，把热闹、喧哗的气氛喧染极至，长句之后，蜂回路转，一个仅三个词的短句扑入读者的双目几乎沸腾的场面顿时凝固但其余音未绝，此时外表虽冷漠，内心却炙热难当。

2、句子开头的多样化

“主-谓-宾”、“主-系-表”是英语的基本句型，主语领先句也是用得最多的句型。写作中为避免形式单一，当句子可以用主语开头，同时又可以其它结构开头时，不妨变换一下。如：

(1)Defeated in the minor exchanges,I now play my queen of trumps.(分词短语做状语开头)

(2)There are two ways in which one can own a book.( there be句型开头)

(3)Equally important is a good habit of reading(表语开头)

以上各句都可以用主语开句，但在篇章中通过改变句子开头，文章就会疏落有致，语言形式丰富多采。