Ito ang opinyon ko.

Ito is the demonstrative pronoun for something near the speaker, so it corresponds to this.

The basic contrast is:

• ito = this, near me
• iyan = that, near you
• iyon = that, over there, away from both of us

So Ito ang opinyon ko uses ito because the speaker is presenting something as this one.

Ang is a very common marker in Filipino. Here, it marks the noun phrase opinyon ko.

In this kind of sentence, Ito ang ... is a very common pattern meaning:

• This is the ...
• This is my ...

So ang is not exactly the same as English the, even though it can sometimes feel similar in translation. Its job is grammatical: it marks the noun phrase being identified.

Without ang, the sentence would sound incomplete or ungrammatical in standard Filipino.

Yes, from an English point of view, it looks like is is missing. But in Filipino, that is normal.

Ito ang opinyon ko is a verbless equational sentence. Filipino often does not need a separate word for to be in sentences like this.

So where English says:

• This is my opinion

Filipino can simply say:

• Ito ang opinyon ko

That is completely natural.

In Filipino, short possessive pronouns often come after the noun.

So:

• opinyon ko = my opinion
• bahay ko = my house
• kaibigan ko = my friend

This is one of the most common possession patterns in Filipino.

You can also use a different structure such as aking opinyon, but opinyon ko is very natural and common.

No, not in this sentence.

Ko is the correct form here because it is the genitive/possessive form meaning my.

Compare:

• ako = I
• ko = my / of me

So:

• opinyon ko = my opinion
• not opinyon ako

Using ako here would be incorrect.

Yes. Filipino allows some flexibility, though the emphasis changes.

For example:

• Ito ang opinyon ko.
• Ang opinyon ko ay ito.
• Opinyon ko ito.

All of these can express roughly the same idea, but they do not feel exactly the same.

• Ito ang opinyon ko sounds very natural when you are presenting or pointing out your opinion.
• Ang opinyon ko ay ito sounds a bit more formal or emphatic.
• Opinyon ko ito is shorter and also natural in many contexts.

Opinyon is a standard and common Filipino word, but it is borrowed in origin.

That is very normal in Filipino. Many everyday words come from Spanish or English and are fully accepted in standard usage.

Depending on context, there are also other words with related meanings, such as:

• palagay = opinion, view, assumption
• pananaw = viewpoint, perspective
• tingin ko = I think / my view

But opinyon is perfectly normal and natural.

Yes. Both are correct, but they have slightly different style or emphasis.

• opinyon ko = the most common, natural everyday pattern
• aking opinyon = also correct, but can sound a little more formal, literary, or emphatic

So:

• Ito ang opinyon ko = very natural
• Ito ang aking opinyon = also correct, slightly more formal

A simple pronunciation guide is:

ee-TOH ang oh-pin-YON koh

A few notes:

• ito is usually stressed on the last syllable: itó
• ang sounds roughly like ahng
• opinyon is commonly stressed on the last syllable: opinyón
• ko is a short koh

If you say it smoothly, it will sound something like:

ee-TOH ang oh-pin-YON koh