Ilagay mo ang lapis sa tabi ng kuwaderno.

Lagay is the root word, meaning something like put/place.
Ilagay is the verb form built from that root, and here it functions as a command: put it / place it.

The prefix i- often points to the thing being acted on as the focus of the sentence. In this sentence, the focused thing is ang lapis.

So:

• lagay = root
• ilagay = put/place as a verb
• Ilagay mo... = Put...

Mo means you here, but not in the same form as English you.

In Filipino, pronouns change form depending on their role in the sentence. In Ilagay mo ang lapis..., mo marks the person doing the action: you.

This is very common in commands with this verb pattern:

• Ilagay mo = You put it
• Kunin mo = You get it
• Buksan mo = You open it

So even though English uses plain you, Filipino uses mo in this structure.

Because ang lapis is the focused noun in the sentence—the thing being placed.

In Filipino, ang often marks the noun that the verb is centered on. With ilagay, the sentence is focused on the pencil as the thing being moved or placed.

So:

• ang lapis = the pencil being placed
• mo = the person doing the action
• sa tabi ng kuwaderno = the location

If you changed the structure, the marker might change too, but in this sentence ang is the natural choice.

This is a location phrase.

Breakdown:

• sa = in/at/to/on, depending on context
• tabi = side
• ng kuwaderno = of the notebook

So literally, sa tabi ng kuwaderno means at the side of the notebook. In natural English, that becomes beside the notebook or next to the notebook.

It is a very common Filipino pattern:

• sa tabi ng mesa = beside the table
• sa tabi ng pinto = beside the door
• sa tabi ng bahay = beside the house

Here, ng links tabi to kuwaderno.

Since tabi means side, tabi ng kuwaderno literally means side of the notebook.

So ng here works a bit like of in English:

• tabi ng kuwaderno = side of the notebook
• gilid ng papel = edge of the paper
• harap ng bahay = front of the house

This is different from the ng that can mark an object in other sentence patterns. Filipino ng has several uses, and this is one of them.

Yes, Filipino word order is fairly flexible, though some versions sound more natural in certain situations.

The most neutral version is:

• Ilagay mo ang lapis sa tabi ng kuwaderno.

You could also hear:

• Ang lapis, ilagay mo sa tabi ng kuwaderno.

That version puts extra attention on the pencil, almost like As for the pencil, put it beside the notebook.

So the original sentence is the most straightforward and natural for a basic command, but reordering is possible for emphasis.

Yes, it is a command or instruction.

By itself, Ilagay mo ang lapis sa tabi ng kuwaderno is neutral and direct. It is not automatically rude, but it can sound firm depending on tone and context.

If you want to make it more polite, you can use forms like:

• Pakilagay mo ang lapis sa tabi ng kuwaderno.
• Pakiilagay ang lapis sa tabi ng kuwaderno.
• Ilagay mo naman ang lapis sa tabi ng kuwaderno.
  (can sound softer depending on tone)

So the original is fine for instructions, classroom speech, or casual situations, but it is not the softest possible version.

Sometimes, yes.

You may see:

• Ilagay ang lapis sa tabi ng kuwaderno.

This sounds more like a written instruction, label, recipe step, or impersonal command: Place the pencil beside the notebook.

Adding mo makes the command more directly addressed to someone:

• Ilagay mo ang lapis... = You, put the pencil...

So both are possible, but mo makes the listener more explicit.

They are related, but not exactly the same in structure.

• sa tabi ng kuwaderno = at the side of the notebook / beside the notebook
• katabi ng kuwaderno = next to the notebook

In many everyday situations, they are very close in meaning.

Examples:

• Ilagay mo ang lapis sa tabi ng kuwaderno.
• Ilagay mo ang lapis katabi ng kuwaderno.

Both can mean Put the pencil beside the notebook.

A helpful way to think about it:

• tabi is a noun: side
• katabi is more like adjacent / next to

Kuwaderno is the Filipino spelling of a word borrowed from Spanish cuaderno.

In modern Filipino spelling, borrowed sounds are often written in a way that matches Filipino pronunciation more directly, so cu becomes kuw here.

That is why you often see:

• kuwaderno instead of the older Spanish-style spelling
• pronounced roughly kwa-DER-no

You may occasionally encounter older or alternate spellings in some materials, but kuwaderno is the standard Filipino form.

A simple pronunciation guide is:

ee-LA-gay mo ang LA-pis sa ta-BI ng kwa-DER-no

A few notes:

• Ilagay has stress on la
• lapis has stress on la
• tabi has stress on the second syllable: bi
• kuwaderno is commonly pronounced kwa-DER-no

A natural rhythm would be:

Ilagay mo | ang lapis | sa tabi ng kuwaderno.

The key markers are:

• mo = marks the doer, you
• ang = marks the focused noun, the pencil
• sa = marks the location
• ng = links tabi to kuwaderno

So the structure is roughly:

• Ilagay = verb
• mo = doer
• ang lapis = focused thing being placed
• sa tabi ng kuwaderno = where it should be placed

This is a very common Filipino sentence pattern, so understanding these little markers is extremely useful.