Selagi guru menulis di papan tulis, saya mengecek ejaan dan menyalin huruf yang sulit.

Selagi means while or at the same time that. In this sentence, it introduces an action happening in the background while another action is going on.

A rough comparison:

• selagi = while / as long as
• sementara = while / meanwhile
• ketika = when

In many situations, selagi and sementara can both work. Selagi often feels a bit like while, especially when two actions overlap in time.

So:

• Selagi guru menulis... = While the teacher is writing...

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

So:

• guru can mean a teacher or the teacher
• papan tulis can mean a blackboard/whiteboard or the blackboard/whiteboard

The exact meaning depends on context. In this sentence, English naturally uses the teacher and the board, but Indonesian does not need separate words for that.

Tulis is the root word meaning write.
Menulis is the active verb form, created with the meN- prefix.

So:

• tulis = the root
• menulis = to write / writing

In normal sentences, Indonesian often uses the prefixed verb:

• guru menulis = the teacher writes / is writing

Using just tulis here would sound incomplete or unnatural in standard Indonesian.

Here, di is a preposition meaning in, on, or at, depending on context.

So:

• di papan tulis = on the board

A very important point for learners: this di is separate because it is a preposition.

Compare:

• di papan tulis = on the board
• ditulis = written

In ditulis, di- is a verb prefix, not a separate preposition.

A simple rule:

• di
  • place = written separately
• di-
  • verb = written together

Papan tulis literally means writing board:

• papan = board
• tulis = write / writing

In actual usage, it means a classroom board, such as:

• blackboard
• whiteboard

So di papan tulis is the natural way to say on the board.

Yes. Mengecek is a very common modern Indonesian verb meaning to check.

It comes from the borrowed base cek and takes the active prefix meN-, becoming mengecek.

So:

• cek = check
• mengecek = to check / checking

It is widely used in everyday speech and writing. A more formal or more traditionally Indonesian alternative can sometimes be memeriksa, depending on context.

For example:

• mengecek ejaan = check spelling
• memeriksa ejaan = examine/check spelling

Both can work, but mengecek sounds very natural and common.

Yes, in this sentence ejaan means spelling.

It refers to the correct arrangement of letters in words. So:

• mengecek ejaan = checking spelling

Depending on context, ejaan can also refer more broadly to an orthographic system or spelling conventions, but in ordinary learning sentences like this one, spelling is the right meaning.

Menyalin means to copy or to transcribe.

It comes from the root salin, which has the idea of copying something from one source into another form.

In this sentence:

• menyalin huruf yang sulit = copying/transcribing difficult letters

This does not necessarily mean copying in the sense of cheating. It often means writing down what you see, reproducing it carefully, or making your own written version.

Yang introduces a relative clause, similar to that, which, or who in English.

So:

• huruf = letters
• yang sulit = that are difficult

Together:

• huruf yang sulit = difficult letters / letters that are difficult

Here, yang sulit describes huruf.

This is a very common Indonesian pattern:

• buku yang tebal = the book that is thick / the thick book
• orang yang baik = the person who is kind / a kind person

So in your sentence, yang sulit tells you which letters are being copied.

Grammatically, sulit directly describes huruf:

• huruf yang sulit = letters that are difficult

In real context, that usually means the letters are hard to read, write, identify, or reproduce. Indonesian often leaves that kind of detail unstated because the context makes it clear.

So the phrase does not explicitly say:

• difficult to read
• difficult to spell
• difficult to copy

It simply says the letters are difficult, and the listener infers the specific sense from the situation.

Indonesian verbs do not change form for tense the way English verbs do.

So:

• menulis can mean write, writes, is writing, was writing, depending on context
• mengecek can mean check, am checking, was checking, etc.

The time reference comes from context and from words like selagi, which shows that the actions are happening at the same time.

Because the sentence describes overlapping actions, English usually translates them with a continuous form:

• While the teacher was writing on the board, I was checking spelling and copying difficult letters.

But Indonesian does not need separate verb endings for that.

Yes, Indonesian can sometimes drop the subject when it is obvious from context, but including saya makes the sentence clear and complete.

So:

• saya mengecek... = I check / I was checking...

If the subject were already understood, someone might say something shorter in conversation. But in a full sentence, especially in teaching material, keeping saya is natural and helpful.

The comma separates the opening time clause from the main clause.

Structure:

• Selagi guru menulis di papan tulis, = while the teacher is writing on the board,
• saya mengecek ejaan dan menyalin huruf yang sulit. = I check spelling and copy difficult letters.

This is similar to English punctuation:

• While the teacher was writing on the board, I checked the spelling...

The comma helps readability, especially when the sentence begins with a subordinate clause.

Yes. Several alternatives are possible, depending on style and nuance. For example:

• Sementara guru menulis di papan tulis, saya mengecek ejaan dan menyalin huruf yang sulit.
• Ketika guru menulis di papan tulis, saya mengecek ejaan dan menyalin huruf yang sulit.

These are all understandable, but they are not exactly identical in feel:

• selagi emphasizes while
• sementara also works well for simultaneous actions
• ketika is more like when, and can be a little less focused on the overlap itself

So the original sentence is perfectly natural, and the alternatives are also possible.