Ina son wannan da gaske.

Because ina already includes the idea of I. In this kind of sentence, it marks first person singular and a present/imperfective sense.

So ina son... is a very common Hausa pattern for saying things like I like..., I want..., or I love..., depending on context.

You do not need a separate word for I unless you want extra emphasis.

Many learners first meet the base form so, but in the very common pattern ina son + object, the form son is what you normally see.

So it is best to learn ina son... as a chunk:

• ina son wannan
• ina son ka
• ina son abinci

In other words, son is the expected form in this sentence, not a mistake.

Wannan means this or this one.

It can stand alone, just like English this, when the thing being talked about is already clear from the situation. So the sentence does not need an extra noun after it.

For example, if someone shows you a shirt, a song, a dish, or an idea, you can simply say Ina son wannan da gaske.

Da gaske means really, truly, or seriously.

Literally, it is related to the idea of truth or seriousness, but in natural English it often comes out as:

• really
• truly
• for real

So in this sentence, it strengthens the feeling: the speaker is not just saying they like it, but that they really do.

That is just normal Hausa word order.

A very natural pattern is:

subject marker + verb + object + adverbial expression

So:

• Ina = I
• son = like/love/want
• wannan = this
• da gaske = really

English often says I really like this, but Hausa naturally says the equivalent of I like this really.

It can mean like, love, or want depending on context.

That is one reason learners sometimes find so/son tricky at first. The exact meaning depends on:

• what the object is
• the situation
• the tone of the conversation

So Ina son wannan could mean different things in different contexts. If the meaning has already been given to you, follow that context.

Yes, often you can.

For example:

• Ina son wannan sosai = I like/love this very much
• Ina son wannan da gaske = I really/truly like this

There is overlap, but the nuance is a little different:

• sosai focuses more on degree: very much
• da gaske focuses more on realness/sincerity/emphasis: really, truly

Both are natural, but they are not always identical in tone.

Yes, but that adds emphasis.

Normally, ina already tells you the subject is I, so Ni is not necessary.

If you say Ni ina son wannan da gaske, it sounds more like:

• I really like this
• As for me, I really like this

That is useful if you are contrasting yourself with someone else.

A rough guide for an English speaker is:

EE-nah son WAHN-nahn dah GAHS-keh

A few helpful notes:

• Keep the vowels short and clear.
• wannan has clearly pronounced n sounds.
• g in gaske is a hard g, as in go.
• Hausa spelling is usually quite phonetic.

Also, everyday Hausa writing usually does not mark tone, so listening to native audio is very helpful for sounding natural.