This is the 2619th most frequent Chinese word.
这家
"This family" or "this household"; can also mean "this business/shop" depending on context.
In this sentence, '这家' (this) is used to specify and refer to '公司' (company) in particular.
这家公司是一家大型跨国企业。
This company is a large multinational corporation.
Here, '这家' is used to indicate a specific restaurant under discussion or observation.
这家饭店的菜味道很不错。
The dishes at this restaurant taste very good.
In this example, '这家' is applied to identify a particular store being mentioned.