Learn Hardcore Indonesian: Kereta pertama selalu ramai. - The first train is always crowded.

In this sentence, kereta means train. It’s short for kereta api (railway train), and in everyday Indonesian people often just say kereta.

Why is there no article like the before kereta?

Indonesian doesn’t use articles (no a, an, or the). Nouns stand alone, and context tells you whether you’re talking about something definite or indefinite.

What does pertama mean, and why does it follow kereta?

Pertama is the ordinal first. In Indonesian, ordinals normally come after the noun: kereta pertama = the first train.

Could we say kereta api pertama instead of kereta pertama?

Yes. Kereta api pertama is more formal, explicitly including api (fire) to form train, but most speakers simply say kereta pertama.

Why isn’t there a linking verb like is or adalah in the sentence?

Linking verbs (copulas) are optional in Indonesian. You could say kereta pertama adalah selalu ramai, but it’s more natural to drop adalah and just say kereta pertama selalu ramai.

Is ramai a verb or an adjective here?

Ramai functions as a stative verb or adjective meaning crowded or busy. In this predicate position it describes the state of kereta pertama.

Why does selalu come before ramai, and can we place it elsewhere?

Selalu is an adverb of frequency (“always”) and typically precedes the verb or adjective it modifies. Putting it after (kereta pertama ramai selalu) sounds unnatural.

What’s the difference between selalu and sering?

Both are frequency adverbs. Selalu means always (100% of the time), while sering means often or frequently, but not necessarily every time.

How would I express the first train is always very crowded?

Add an intensifier between selalu and ramai, for example:
• kereta pertama selalu sangat ramai
• kereta pertama selalu penuh sesak (jam-packed)