我在家里面学数学。

Wǒ zài jiā lǐmian xué shùxué.

I studied math at my house.

我们在植物园里面。

Wǒmen zài zhíwùyuán lǐmian.

We are in the botanical garden.

图书馆里面很安静，我们小声说话吧。

Túshūguǎn lǐmiàn hěn ānjìng, wǒmen xiǎoshēng shuōhuà ba.

It is very quiet inside the library, so let’s speak softly.