解析：your→our　根据前面的主语we可知，此处要用our，表示"我们能够开阔我们的视野"。

　　4．(2016·全国卷Ⅲ)At first, I thought I knew everything and could make decisions by yourself.________________

　　解析：yourself→myself　根据前面的I可知，此处指"我自己做决定"，故应用myself。

　　5．(2016·四川高考)When he came back, I found a bunch of flowers in her hand.________________

　　解析：her→his　由前面的"When he came back"可知，这束花是在"他的(his)"手里。

　　6．(2015·全国卷Ⅰ)We must find ways to protect your environment.If we fail to do so, we'll live to regret it.

　　________________

　　解析：your→our/the　依据前后句的语境及逻辑关系可知，前面的主语是we，句中的your与上下文相悖，应当改为our/the才能使句意通顺。

　　7．(2015·全国卷Ⅱ)Five minutes later, Tony saw parents.

　　________________

　　解析：saw后加his　根据语境及英语表达习惯，应当在parents前加上与主语Tony相一致的物主代词his。

　　8．(2015·四川高考)As I told you last time, I made three new friends here ...but I'm afraid I'll lose their friendship.What do you think I should do? If you were me, would you talk to him？________________

　　解析：him→them　根据上文可知，此处指作者交的三个新朋友，故用them。

　　9．(2015·浙江高考)Close to the school there was a beautiful park with many trees around them.________________

　　解析：them→it　a beautiful park为单数，故应用it指代前面的单数可数名词park。

　　[谨记规则]

　　(一)人称代词、物主代词与反身代词

　　1．基本用法

类别 主格 宾格 形容词性物主代词 名词性

物主代词 反身代词