考研语法小知识：代词

1.与所指代的名词在性、数、格上是否一致

　　如：Each cigarette a person smokes does some harm, and eventually he may get a serious disease from its effect.

　　It was during the 1920s that the friendship between the two American writers Hemingway and Fitzgerald reached its highest point.

　　2.that的指代作用

　　that指代不可数名词和单数可数名词(如是复数，用those)，后面通常跟有修饰语，如出现在比较结构中的that of。如：Conversation calls for a willingness to alternate the role of speaker with that of listener, and it calls for occasional digestive pauses by both.

　　No bread eaten by man is so sweet as that earned by his own labor.

　　3.one的指代作用

　　one指代不确指的单数可数名词，复数为ones。the one 指代确指的单数可数名词。如：

　　A good writer is one who can express the commonplace in an uncommon way.