一、主格人稱代詞有I， we， you， he， she， they， it，主格人稱代詞就是在句中充當主語和表語的代詞

　　二、賓格人稱代詞有me， us， you， him， her， them， it，賓格人稱代詞即在句中充當賓語(含介詞賓語)的代詞

　　三、同步練習

　　1) Archibald Motley’s artistic talent [A] was apparent [B] by the time him [C] enrolled [D] in high school.

　　2) Legends often contain an element [A] of fact， but [B] sometimes it is [C] totally [D] untrue.

　　3) Unlike [A] road vehicles， Hovercrafts have no physical [B] contact with the surface over which [C] them [D] travel.

　　4) Let you and I [A] promise that we shall always [B] dare to do [C] what is [D] right.

　　5) Most of we [A] know that conductors direct their orchestras with a baton， but how many [B] are aware that [C] they also direct with their faces， hands [D] ， and shoulders?

　　四、例題解析

　　1) C錯。him是賓格，而此處卻需要作主語的人稱代詞，故應將him改為主格he.

　　2) C錯。 改為they are.C處代替的是“Legends”而不是“an element”。

　　3) D錯。them也是賓格，應改用主格they，作定語從句中的主語，謂語為travel.

　　4) A錯。 改為me.

　　5) A錯。改為賓格us，因為前面是介詞of，us作其賓語，故用賓格。