1 before

2 prior to

3 ago

4 previously

5 beforehand

1 before

2 formerly

3 previous

4 ago

1 front

2 forward

3 ahead

4 first

5 top (followed by a number)

6 future

7 ago

8 before

9 BC (e.g. 前293年)

10 former

11 formerly

1 sky

1 to shift to an earlier date

2 to do sth ahead of time

3 in advance

1 to advance courageously (idiom)

2 to press forward

1 a worthless piece of paper (idiom)

1 (idiom) ignore your elders at your peril

1 regardless of what's before or after (idiom); rushing blindly into sth

1 I've admired your reputation for a long time (idiom); I've been looking forward to meeting you.

2 It's an honor to meet you at last.