A. He was watching me or something for an hour or two, drawing back the curtain so little lest I catch him, but I saw his face, and I think I can see the anxiety upon it, the worried impatience.

　　B. I have brought what you need, but you haven`t brought what I need.

　　3.根据不同的修辞功能，句子可分为松散句，圆周句，对偶句，平行结构句，长句和短句。

　　(1)松散句和圆周句。

　　在一个句子中，先介绍主要的信息，再介绍次要的信息，这样的句子叫松散句。松散句的结构比较松散，其各个部分往往能独立表示某一意义。在一个句子中先介绍次要的信息，再介绍重要的信息，即要到句子的末尾，句子的意思才完全表达清楚，这样的句子叫圆周句。圆周句的结构紧凑，只有读完整个句子，全句的整体意思才能显现出来。例如：

　　A. The workers here are mostly diligent, though not all.

　　B. The workers here are mostly, though not all，diligent.

　　C. He will go abroad if he has enough money.

　　D. If he has enough money, he will go abroad.

　　句A和句C为松散句，句B和句D为圆周句。

　　一般来讲，按正常语序排列的简单句、并列句，主句在前从句在后的复合句都属于松散句。松散句便于组织，便于理解，便于使用，是人们常用的句式。修饰语(尤其是状语)位于句首的简单句以及从句在前主句在后的复合句属于圆周句。圆周句的重心在后，可以造成一种悬念，抓住读者的注意力，因而可以收到一种特殊的效果。但圆周句不能使用太频繁，因为没有人愿意一直处于等待和悬念当中。

　　(2)对偶句是在句中用平对或对称的结构来表现两种相反的意思。由于其结构匀称整齐，前后两层意思相反，可达到强调的效果。例如：

　　A. What is written without effect is in general read without pleasure.

　　B. Deeds show what we are; words what we should be.

　　(3)平行结构句就是把两个或两个以上的结构相同，意义并重，语气一致的词、短语或句子排列成串形成一个整体，以加强语气，达到强调的目的。例如：

　　A. We can gain knowledge by reading, by reflection, by observation or by practice.

　　B. I have a dream that my four children will someday live in a nation where they will not be judged by the color of their skin but by the content of their character.

　　(4)长句和短句。

　　根据句子的长短，句子可分为长句和短句。例如：

　　A different form of reading might also be done, as it was in the past: reading aloud. Few pastimes bring a family closer together than gathering around and listening to mother or father to read a good story. The quite