पहले ही in English:

We prepared snacks beforehand.

If you feel nervous speaking in public, practise your speech to the mirror beforehand.

I knew beforehand that would happen

Be sure to fill in the blanks from top to bottom beforehand.

How could she tell beforehand that I was going to go out?

Getting your thoughts organized beforehand makes writing the actual essay much quicker and easier, since you know what direction you're going in.

if you prepare the ingredients beforehand, the cooking will take you less time

I didn’t say anything beforehand – it was a surprise.

I'd rung up beforehand to book a table.

Take the syringe out of the packaging, but remember to disinfect your hands beforehand.

Parents are encouraged to enhance their children experience by preparing carefully for tge day beforehand. How could she tell beforehand that I was going to go out? I'd rung up beforehand to book a table.

The police need to be briefed beforehand on how to deal with this sort of situation.

Be sure to find out beforehand which one you should leave from.

I know better than to climb mountains in winter without making all necessary preparations beforehand.