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Lesson 4: Tenses in Dusun

πŸ”Ή Part A: Present Tense

In Dusun, the present tense can be expressed in several ways depending on the formality, strength, or nature of the action. Below are four common ways to convey present actions:

βœ… 1. Root verb – Imperative or casual present

This is often used in instructions or when encouraging someone. It’s direct but relatively soft.

βœ… 2. Suffix -o – Strong command

Used when issuing a strong or urgent command. It emphasizes the action and expects immediate response.

βœ… 3. ma- / mo- prefix – Regular present tense

This is the most common form to express ongoing actions or habits. Use ma- or mo- depending on the root word.

βœ… 4. papa- / popo- prefix – Doing an action for someone else

This form expresses that the action is being done for the benefit of another person β€” often interpreted as offering a service or doing a favor.

Tip: Use papa- if the second letter of the root verb is a, otherwise use popo-.

VerbWith PrefixSentence Example
akan (eat)papaakanPapaakan oku doh tungau ku – I am feeding my cat
tagkus (run)papatangkusPapatangkus oku di sapi ku – I am running my cow around (for exercise)
sunud (inform)poposunudPoposunud oku diya – I am informing you
tungag (wake up)popotungagPopotungag oku do tanak ku – I am waking my child up

πŸ”Ή Part B: Future Tense

In Dusun, there is no single special future tense ending. Future actions are usually expressed by using verbs such as mongoi or ngoyon, or by adding the verb suffixes -an / -on, often together with time words like suab (tomorrow) or tiinu (later).

1. Using mongoi – β€œgoing to …”

Mongoi is a common and natural way to talk about future plans. It roughly means β€œgoing to”.

The structure usually follows:
mongoi + pronoun + verb (+ place / activity)

The focus here is on the plan or movement: someone is going to do something, either soon or later, depending on the time word.

2. Using ngoyon – β€œabout to … / going to (now)”

Ngoyon is used when someone is about to do something or there is a clear focus on the action and its object.

The structure usually follows:
ngoyon + pronoun + imperative verb (+ object)

This often feels more immediate, like β€œabout to [do it]”, and usually highlights what is going to receive the action.

3. Using verb suffixes -an / -on – β€œwill …” (firm intention)

Another way to express future meaning is by modifying the verb root with a suffix: -an or -on. This often sounds like a firm plan or promise, similar to English β€œwill”.

The structure usually follows:
verb + -an / -on + pronoun (+ object)

These forms emphasize firm intent β€” like saying β€œIt will definitely happen,” especially when a specific object is mentioned.

4. Saying β€œmust” and β€œneed”

English often uses must and need to for things that have to be done, sometimes with a future idea (β€œI must go tomorrow”, β€œYou need to study”). In Dusun these are expressed with separate words, not with a special tense.

The pattern is usually:
mositi / oporulu + pronoun + verb (+ time word)


πŸ”Ή Part C: Past Tense

Dusun past tense uses prefixes (naka-, minan-, pina-), infix -in-, and more. The choice depends on whether focus is on the doer, object, or action.

βœ… 1. naka- / noko- β†’ "already done"

βœ… 2. minan- / minong- β†’ "Subject focus"

βœ… 3. na- / no- β†’ "Object focus"

βœ… 4. pina- / pino- β†’ "Action done to someone/something"

βœ… 5. in infix β†’ "Object focus"