Usibahatishe jibu kwenye karatasi ya majibu.

Usi- marks a negative command addressed to one person. It is the Swahili equivalent of don’t ... in English.

So:

• Usibahatishe = Don’t guess
• If you were speaking to more than one person, you would usually use msi- instead.

Because negative commands in Swahili normally use the subjunctive ending -e instead of the usual final -a.

The basic verb is:

• kubahatisha = to guess / to do by chance

In a negative command:

• usi + bahatish + e → usibahatishe

So the -e ending is not random; it is part of the grammar of this kind of command.

Here kubahatisha means something like:

• to guess
• to answer by chance
• to choose randomly without knowing

In an exam context, it has the sense of not giving an answer unless you actually know it, rather than just trying your luck.

Here jibu is a noun, meaning answer.

That can be confusing because jibu! can also be the imperative form of the verb kujibu = answer!

In this sentence, though, it comes after usibahatishe and functions as the object of that verb:

• usibahatishe jibu = don’t guess an answer

So here it is definitely the noun.

Because they are doing different jobs in the sentence.

• jibu is singular: an answer
• majibu is plural: answers

So:

• usibahatishe jibu = don’t guess an answer
• karatasi ya majibu = answer sheet, literally paper of answers

The sheet is for multiple answers overall, even if you are guessing only one answer at a time.

Kwenye is a location word that can mean in, on, or at, depending on context.

Here, because the location is a sheet of paper, English naturally uses on:

• kwenye karatasi ya majibu = on the answer sheet

So do not expect kwenye to match only one English preposition every time.

Ya is the connector meaning of, and it agrees with the noun that comes before it, here karatasi.

So:

• karatasi ya majibu = paper of answers / answer sheet

This ya is part of Swahili noun-class agreement. It is not chosen because of majibu; it is chosen because of karatasi.

If you were talking about multiple answer sheets, you would say:

• karatasi za majibu

Because Swahili does not normally use articles like English the, a, or an.

Whether something is definite or indefinite is usually understood from context.

So jibu can mean:

• an answer
• the answer

depending on the situation.

Yes. The order is very natural for Swahili.

It is basically:

• Usibahatishe — verb
• jibu — object
• kwenye karatasi ya majibu — location phrase

So the structure is:

• Don’t-guess
  • answer
    • on the answer sheet

That is a normal Swahili pattern.

You would change usi- to msi-:

• Msibahatishe jibu kwenye karatasi ya majibu.

That means Don’t guess the answer on the answer sheet when speaking to more than one person.

So:

• usi- = don’t ... (to one person)
• msi- = don’t ... (to more than one person)