there or in there

[Winwin2011]

A: Where's the ABC supermarket?
B: It's on the second floor. You can buy good steak in there/there.

Are the words in bold both correct?

Thanks.

 

[EnglishFix]

In this case...

You can buy good steak there.

 

[Winwin2011]

In this case...

You can buy good steak there.

Thanks, EnglishFix.

The supermarket is in a building. Why is "in there" incorrect?

If we are in a taxi., we can say 'It's too hot in here'.

 

[MikeNewYork]

I would say both are correct and common.

 

[Winwin2011]

1. I went to Mary's home yesterday. It was very hot there because she hadn't bought new air-conditioners.
2. I went to Mary's home yesterday. It was very hot in there because she hadn't bought new air-conditioners.

Are the words in bold both correct?

Thanks for your help.

 

[MikeNewYork]

1. I went to Mary's home yesterday. It was very hot there because she hadn't bought new air-conditioners.
2. I went to Mary's home yesterday. It was very hot in there because she hadn't bought new air-conditioners.

Are the words in bold both correct?

Thanks for your help.

I would say both could be used and understood. In this case, however, I would tend to use "in there" because the focus is on the temperature inside the house.