Isuot mo ang itim mong sapatos bago tayo pumunta sa opisina.

Because Filipino very often uses verb-first word order, especially in commands.

So instead of starting with you, the sentence starts with the action:

Isuot mo... = Put on...

That is a very normal pattern in Filipino.

Isuot is a command form built from the root suot, which has to do with wearing or putting on clothing.

In this sentence, isuot is an object-focus imperative. That means the verb is pointing to the specific thing being put on.

So:

• Isuot mo ang sapatos = Put on the shoes
• Magsuot ka ng sapatos = Wear shoes / Put on shoes

Both are possible, but they are structured differently.
With isuot, the sentence is centered more directly on the specific item: the black shoes.

That is because isuot uses an object-focus pattern.

In this pattern:

• the doer is marked by mo
• the thing affected by the action is marked by ang

So in:

Isuot mo ang itim mong sapatos

• mo = the person being told to do the action
• ang itim mong sapatos = the thing to be put on

If you changed the verb pattern, you would also change the pronoun pattern. For example:

• Magsuot ka ng itim mong sapatos

Here, ka is used because magsuot is an actor-focus form.

Ang marks the noun phrase that the verb is focused on.

Here, it marks ang itim mong sapatos as the specific thing being put on.

So the structure is roughly:

• Isuot = put on
• mo = by you
• ang itim mong sapatos = the black shoes that are being put on

A helpful way to think about it is: with isuot, the shoes are the main item the verb is targeting.

Mong is basically mo plus the linker -ng.

This happens when mo comes before the noun it connects to.

So:

• mo + -ng → mong

In itim mong sapatos, the -ng helps link the phrase smoothly to sapatos.

This kind of linker is very common in Filipino.

Yes, itim na sapatos mo is also grammatical.

Both of these can mean your black shoes:

• itim mong sapatos
• itim na sapatos mo

The version in your sentence is very natural and compact. Filipino often allows more than one natural word order inside noun phrases.

So a learner should recognize both patterns.

Itim is the basic word for black and is commonly used to describe the color of things like clothes and shoes.

Maitim can also describe something dark or blackish, but it can carry a slightly different nuance depending on context.

For a straightforward color description like black shoes, itim is the most neutral and expected choice.

Filipino nouns are often not marked for plural unless the speaker wants to make it explicit.

So sapatos can mean:

• shoe
• shoes

Context tells you which one is meant.

In this sentence, it is naturally understood as shoes, since people normally put on a pair. If you wanted to mark plural clearly, you could say mga sapatos.

Bago means before here.

It introduces a time clause:

bago tayo pumunta sa opisina
= before we go to the office

So the whole sentence tells someone to do one action first, and then another action happens later.

Because tayo is the inclusive form of we.

That means it includes:

• the speaker
• the listener

So tayo means you and I / we including you.

By contrast, kami means we, but not you.

Since the sentence is talking about the speaker and the person being addressed going to the office together, tayo is the correct choice.

Pumunta is a verb meaning to go.

It comes from the root punta and uses the -um- infix, which is a very common Filipino verb pattern.

So:

• punta = root
• pumunta = went / go / to go, depending on context

In this sentence, it appears in the clause:

tayo pumunta sa opisina
more naturally understood as part of bago tayo pumunta sa opisina

That means before we go to the office.

Sa is a marker commonly used for locations and destinations.

So:

• sa opisina = to the office / at the office

Because the verb is pumunta (go), the meaning here is clearly to the office.

So sa is the normal marker to use with a destination like opisina.