Tunahitaji kubadilisha mipango.

Tunahitaji can be broken down like this:

• tu- = we
• -na- = present tense marker
• -hitaji = need

So tunahitaji literally means we need or we are needing, though in natural English you would usually just say we need.

In Swahili, the subject is usually built into the verb itself. In tunahitaji, the prefix tu- already means we, so you do not need to add sisi.

• Tunahitaji kubadilisha mipango. = We need to change plans.
• Sisi tunahitaji kubadilisha mipango. = also possible, but sisi adds emphasis, like we in we need to change plans.

Kubadilisha is the infinitive form, meaning to change.

The prefix ku- is the usual marker for the infinitive in Swahili, similar to to in English:

• kubadilisha = to change
• kuona = to see
• kwenda = to go

After a verb like tunahitaji (we need), Swahili often uses an infinitive:

• tunahitaji kubadilisha = we need to change

Swahili word order here is similar to English:

• Tunahitaji = we need
• kubadilisha = to change
• mipango = plans

So the structure is:

subject + verb + infinitive + object

That gives:

Tunahitaji kubadilisha mipango.

Putting mipango before kubadilisha would sound unnatural in this sentence.

Mipango means plans. Its singular form is mpango, meaning plan.

This is part of a noun class pattern in Swahili:

• mpango = plan
• mipango = plans

This noun belongs to the m-/mi- class, where many singular nouns in m- form their plural with mi-.

They are very close, and both can often be translated as to change, but there can be a slight nuance.

• kubadili often means to change, to switch, or to exchange
• kubadilisha often means to alter, to modify, or to make something different

In many everyday situations, both can work, and native usage may overlap. In this sentence, kubadilisha mipango sounds very natural for change the plans or alter the plans.

It can mean either, depending on context.

Swahili does not have articles like a, an, and the. So:

• mipango can mean plans
• mipango can also mean the plans

The exact meaning is understood from the situation. If the plans are already known in context, English will often translate it as the plans.

Yes, in many contexts tunahitaji kubadilisha mipango can be translated naturally as we need to change plans, and in English that may feel very close to we have to change plans.

But if you want a stronger sense of obligation in Swahili, you might also hear:

• Lazima tubadilishe mipango. = We must change plans.
• Tunapaswa kubadilisha mipango. = We should / ought to change plans.

So tunahitaji expresses need, but not always the strongest possible obligation.

A simple pronunciation guide is:

too-nah-hee-TAH-jee koo-bah-dee-LEE-shah mee-PAHN-go

A few helpful points:

• Swahili vowels are usually pure and consistent:
  • a as in father
  • e as in bet or slightly tenser
  • i as in machine
  • o as in go but shorter
  • u as in flute
• Stress usually falls on the second-to-last syllable:
  • tunaHItaji
  • kubadiLIsha
  • miPANgo

Yes, that is also possible and understandable.

• Tunahitaji kubadilisha mipango
• Tunahitaji kubadili mipango

Both can mean we need to change plans. The first may suggest altering/modifying the plans a bit more explicitly, while the second can sound a little more general. In real use, both are common enough that a learner should recognize and understand them.

A natural negative is:

Hatutahitaji kubadilisha mipango. = We will not need to change plans.

If you want present negative, you would commonly say:

Hatuhitaji kubadilisha mipango. = We do not need to change plans.

Here the verb changes like this:

• tu- = we
• hatu- = we not

So:

• tunahitaji = we need
• hatuhitaji = we do not need

No, that would change the meaning.

• Tunahitaji kubadilisha mipango. = We need to change plans.
• Tunahitaji mipango. = We need plans.

So kubadilisha is necessary if you want to express the action to change. Without it, mipango becomes the thing you need, not the thing you are changing.