ABOUT:
■ 前に can be used both spatially and temporally. In front of something (spatially) and previous to something (temporally).
HOW to use:
■ Verb: Place after the plain, non-past verb.
■ Noun: Place の前 after the noun.
EXAMPLES:
食べる前に、手を洗ってください。
Please wash your hands before eating.
[eating | before | hand | wash | please]
仕事に行く前に、朝ごはんを食べます。
Before going to work, (I) eat breakfast.
[work | to | go | before | breakfast | eat]