Yaro ɗaya yana tsaye a bayan ƙofa.

In Hausa, numbers normally come after the noun they count:

• yaro ɗaya – one boy
• yara biyu – two boys
• gidaje uku – three houses

So the pattern is:

Noun + Number

This is just a basic word‑order difference between English and Hausa.

ɗaya is first of all the number one.

In a sentence like Yaro ɗaya yana tsaye a bayan ƙofa, it can be understood as:

• One boy is standing behind the door (numerical); or
• A single boy / one particular boy is standing behind the door (emphasising that it’s only one).

If you want the idea a certain/some boy without stressing the number, Hausa often uses wani:

• Wani yaro yana tsaye a bayan ƙofa – Some boy / a certain boy is standing behind the door.

yana is the 3rd person masculine singular continuous form of the verb to be / to do in Hausa. It marks an ongoing action or current state, like English is …‑ing.

Common continuous forms are:

• ina – I am
• kana – you (m.sg.) are
• kina – you (f.sg.) are
• yana – he is / it (masc.) is
• tana – she is / it (fem.) is
• muna – we are
• kuna – you (pl.) are
• suna – they are

So yaro ɗaya yana tsaye = one boy is standing.
Here yana agrees with yaro ɗaya (3rd person singular).

tsaye is a kind of verbal adjective / participle meaning standing (in a standing position).

It comes from the verb tsaya:

• tsaya – to stand, to stop, to stand up (event)
• yana tsaya – he is (in the process of) stopping/standing (doing the action)
• yana tsaye – he is standing (in the state of being on his feet)

So:

• Use tsaya when you focus on the action of standing/stopping.
• Use tsaye when you focus on the state or posture of being standing.

In this sentence, we care about his posture, so yana tsaye is used.

Not in this meaning.

• tsayawa is a verbal noun meaning roughly the act of standing/stopping (standing up, halting).
• yana tsayawa would usually suggest he regularly/constantly stops (e.g. on the road), or is (now) in the process of stopping/coming to a halt, depending on context.

To say someone is standing (already in that position), the natural form is:

• yana tsaye – he is standing
• tana tsaye – she is standing
• suna tsaye – they are standing

So in your sentence, tsaye is the correct choice.

Breakdown:

• a – a general locative preposition: at, in, on, inside, etc.
• bayan – behind / at the back of / after
• ƙofa – door

Literally, a bayan ƙofa is at the back of the door, i.e. behind the door.

Other common location phrases built the same way:

• a gaban ƙofa – in front of the door
• a cikin gida – inside the house
• a saman tebur – on top of the table

Yes, bayan has both:

• spatial sense: behind / at the back of
• temporal sense: after / later than

Examples:

• Yana tsaye a bayan ƙofa. – He is standing behind the door.
• Bayan wannan, za mu tafi. – After this, we will go.
• Bayan ƙarfe huɗu. – After four o’clock.

You tell the meaning from context:

• If the complement is a place or object (door, house, person), bayan usually means behind.
• If it’s a time expression or an event, it usually means after.

In normal, neutral Hausa, you should keep the a for locations:

• yana tsaye a bayan ƙofa is the natural way to say is standing behind the door.

Without a, bayan ƙofa sounds more like the back of the door as a noun phrase, not clearly as a location phrase. People may still understand you, but a bayan ƙofa is the standard and safest form.

• ɗ (in ɗaya) is a voiced retroflex / implosive d‑sound.

  • Put your tongue slightly curled back (retroflex), like a strong d, and pull a little air inward as you release it.
  • It’s distinct from plain d in Hausa.

• ƙ (in ƙofa) is a voiceless ejective k‑sound.

  • It feels like a k with an extra burst from the throat (a glottal push), a kind of kʼ.
  • It’s distinct from plain k. Some words change meaning depending on k vs ƙ.

• ts (in tsaye) is a single affricate sound, like ts in cats, but at the start of the word: ts‑a‑ye.

Getting these three sounds roughly right is important, because Hausa contrasts them with d, k, s in meaning.

It looks that way to an English speaker, but in Hausa:

• yaro ɗaya is the full noun phrase subject (one boy).
• yana is the agreeing continuous form of the verb, not a separate pronoun you can just drop.

The basic sentence structure is:

[Subject noun phrase] + [conjugated verb/auxiliary] + [rest]

So:

• Yaro ɗaya – subject
• yana tsaye – is standing (as a unit)
• a bayan ƙofa – location

If you don’t mention who, you just say:

• Yana tsaye a bayan ƙofa. – He is standing behind the door.

Here yana still appears; it’s not optional.

You make both the noun and the verb plural, and change the number:

• Yara biyu suna tsaye a bayan ƙofa.

Breakdown:

• yaro → yara – boy → boys
• biyu – two
• suna – they are (3rd person plural continuous)
• tsaye – standing
• a bayan ƙofa – behind the door

Pattern:

Yara biyu suna tsaye a bayan ƙofa. – Two boys are standing behind the door.

Change the noun to feminine and the verb form to feminine:

• Yarinya ɗaya tana tsaye a bayan ƙofa.

Breakdown:

• yarinya – girl
• ɗaya – one
• tana – she is (3rd person feminine singular continuous)
• tsaye – standing

So:

Yarinya ɗaya tana tsaye a bayan ƙofa. – One girl is standing behind the door.

1. The boy is not standing behind the door.

Use ba … ba negation and the negative of yana, which is ba ya:

• Yaro ɗaya ba ya tsaye a bayan ƙofa.
  – The boy is not standing behind the door.

(With clearer reference, you might say Yaron nan ba ya tsaye a bayan ƙofa. – This boy is not standing behind the door.)

2. No boy is standing behind the door.

A natural way is to use babu (there is no / there are no):

• Babu yaro da yake tsaye a bayan ƙofa.
  – There is no boy who is standing behind the door.

This corresponds in meaning to No boy is standing behind the door.