jeoneun hoeui jeone hangsang ginjanghaeyo.

I always get nervous before meetings.

Breakdown of jeoneun hoeui jeone hangsang ginjanghaeyo.

• 저: I
• ~는: topic particle
• 항상: always
• 전에: before

Questions & Answers about jeoneun hoeui jeone hangsang ginjanghaeyo.

Why does it use 저는 instead of 제가?

저는 uses the topic particle -는/은 and sets “as for me…” as the topic: As for me, before meetings I always get nervous.
제가 (subject particle -가/이) is more typical when you’re emphasizing who is nervous (often in contrast): I’m the one who gets nervous (not someone else).
In everyday neutral statements about your habit, 저는 is very common.

Can the subject 저는 be omitted?

Yes. If it’s obvious you’re talking about yourself, you can say:

• 회의 전에 항상 긴장해요.
  Korean often drops subjects/topics when they’re understood from context.

What does 회의 전에 mean exactly, and how is it formed?

회의 = meeting (usually work/official)
전 = before
-에 = a particle that can mark a time point (among other uses)

So 회의 전에 literally works like “at (the time) before the meeting”, meaning before the meeting starts.

What’s the difference between 회의 전에 and 회의하기 전에?