2. 英语中用物主代词its，his，their等等以代替句中作主语的名词(有时附有修饰语)时，翻译时往往可以不用代词而重复其作主语的名词(有时附有修饰语)，以达到明确具体的目的。

1)Happy families also had their own troubles.

幸福的家庭也有幸福家庭的苦恼。

2)Big powers have their strategies while small countries also have their own lines.

强国有强国的策略，小国也有小国的路线。

3)Each country has its own customs.

各国有各国的风俗。