Questions & Answers about Mereka bergaduh semalam.
Malay verbs normally do not change for tense, person, or number.
So bergaduh stays bergaduh with:
- saya
- dia
- kami
- mereka
The past meaning comes from semalam, which gives the time reference. That is why no extra verb ending is needed.
You can add words like sudah or telah in some contexts, but in this sentence they are unnecessary.
Ber- is a very common Malay prefix. With many roots, it forms an intransitive verb meaning something like to do, to be engaged in, or sometimes to do together / mutually.
Here:
- gaduh = the root
- bergaduh = to quarrel / argue / fight
In this sentence, bergaduh is the normal standard verb form.
In casual spoken Malay, many speakers do say gaduh without ber-.
So:
- Mereka bergaduh semalam = more standard / careful
- Mereka gaduh semalam = common in informal speech
If you are learning standard Malay, bergaduh is the safer form to use.