"Before"

[website]

This is a stupid question, but how do you use "before" in the following sentences?

I saw him before at the store. Wo kan ta yiqian zai chaoshi.??

I was walking around before I saw him at the store.

Before I leave, I must read this book. Yiqian wo likai, wo yiding zhege shu.??

Xiexie.

[anonymoose]

I'm not a native chinese speaker, but these are my versions:

I saw him before at the store. 我在商店里曾经看见过他。

I was walking around before I saw him at the store. 在商店里看见他之前，我是在散步。

Before I leave, I must read this book. 我出发之前不得不把这本书看完。

[danka]

Although I'm not native either, but I would suggest something like this:

I saw him before at the store. 我以前在商店里见过他。

I was walking around before I saw him at the store. 我在商店里见他之前，我正在逛。

Before I leave, I must read this book. 我走之前必须看这本书。

[Quest]

website, time to learn some Chinese grammar! so you can connect those words properly.