请英语高手为我讲解一下哪些是人称代词,哪些是物主代词

I人 称 代 词

一、主格人称代词有I, we, you, he, she, they, it，主格人称代词就是在句中充当主语和表语的代词

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.

二、宾格人称代词有me, us, you, him, her, them, it，宾格人称代词即在句中充当宾语(含介词宾语)的代词

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?

三、例题解析

1) C错。him是宾格，而此处却需要作主语的人称代词，故应将him改为主格he。

2) C错。 改为they are。C处代替的是“Legends”而不是“an element”。

3) D错。them也是宾格，应改用主格they，作定语从句中的主语，谓语为travel。