Referring to something that has happened before the present time.

Used to emphasize that something is true or has happened and might seem surprising.

पहले से

English Usage: I have already finished my homework.

Hindi Usage: मैंने पहले से अपना होमवर्क पूरा कर लिया है।

Indicating that something occurs sooner than expected.

पहले होना

English Usage: It’s already lunchtime!

Hindi Usage: यह पहले ही लंच का समय है!