Sementara itu, saya memeriksa pelan lantai.

Sementara itu means meanwhile or in the meantime.

In this sentence, it sets the scene and tells you that this action is happening at the same time as something else, or during a certain period. It is a common linking phrase in narration.

• Sementara itu, saya memeriksa pelan lantai.
• Meanwhile, I was checking the floor plan.

You can think of it as a time connector at the start of the sentence.

The comma is used because sementara itu is an introductory phrase.

English does the same thing:

• Meanwhile, I checked the floor plan.

In Malay, the comma helps separate the opening time phrase from the main clause. In informal writing, people may sometimes leave it out, but the comma is standard and clear.

It can mean any of those, depending on context.

Malay verbs do not usually change form for tense the way English verbs do. So memeriksa does not by itself tell you whether the action is present, past, or ongoing. The time is usually understood from context or from time words.

So saya memeriksa could mean:

• I check
• I am checking
• I checked
• I was checking

Because the sentence begins with sementara itu, a natural English translation is often Meanwhile, I was checking the floor plan or Meanwhile, I checked the floor plan, depending on the wider context.

Periksa is the root word, meaning check, inspect, or examine.

Memeriksa is the active verb form built from periksa with the meN- prefix. It is the more standard form when the subject is actively doing the action.

• Saya memeriksa dokumen itu. = I checked that document.
• Doktor memeriksa pesakit. = The doctor examines the patient.

In casual speech, you may hear saya periksa, but saya memeriksa sounds more formal and grammatically complete.

This happens because of how the Malay meN- prefix changes shape depending on the first sound of the root word.

With roots beginning with p, the p often drops and the prefix becomes mem-.

So:

• periksa → memeriksa

This is a normal sound change in Malay verb formation. Similar patterns happen with other verbs too.

For example:

• pakai → memakai
• pilih → memilih

So memeriksa is exactly the form you should expect.

Pelan lantai means floor plan.

A pelan is a plan, layout, or drawing.
Lantai means floor.

Together, they refer to a drawing that shows the arrangement of rooms or spaces in a building.

So this is not about physically checking a floor. It means checking a layout or architectural plan.

It can mean either, depending on context.

• lantai can mean the floor surface
• it can also refer to a storey/level in some contexts

But in pelan lantai, it specifically means floor plan, the layout of a building level or interior space.

So here, pelan lantai is a fixed expression, and you should learn it as a set phrase meaning floor plan.

Malay does not normally use articles like a, an, or the.

So pelan lantai can mean:

• a floor plan
• the floor plan

The exact meaning depends on context.

If the speaker and listener already know which floor plan is being discussed, English will often translate it as the floor plan. If it is being mentioned more generally, it could be a floor plan.

Mostly yes.

The basic order is:

• Sementara itu = time expression
• saya = subject
• memeriksa = verb
• pelan lantai = object

So the structure is:

Meanwhile, I checked the floor plan.

This is fairly straightforward for an English speaker because Malay often uses a similar subject–verb–object order.

Yes, but the tone changes.

• saya is neutral, polite, and standard
• aku is more informal and personal

So:

• Saya memeriksa pelan lantai sounds standard and appropriate in most situations
• Aku memeriksa pelan lantai sounds more casual and is used with close friends, in storytelling, or in certain stylistic contexts

For learners, saya is the safer choice unless you are sure a casual tone is appropriate.

Usually it appears at the beginning when it is linking events in a story or explanation:

• Sementara itu, saya memeriksa pelan lantai.

That is the most natural position here.

In some contexts, Malay word order can be moved around for emphasis, but for a learner, putting sementara itu at the start is the best and most idiomatic choice.

It sounds neutral to slightly formal.

Why?

• saya is standard and polite
• memeriksa is the full standard verb form
• pelan lantai sounds like normal written or professional vocabulary

This would fit well in narration, reports, instructions, or professional conversation. In very casual speech, people might shorten things, but this version is natural and correct standard Malay.