sinsa ha asita hazimaru.

は marks 審査 as the topic of the sentence.

So 審査は明日始まる is literally something like:

• As for the review/examination, it starts tomorrow.

In natural English, we usually just say:

• The review starts tomorrow.

A useful point:

• は does not always mean the grammatical subject in the same way English does.
• It often introduces what the sentence is about.

Here, the sentence is talking about the review / screening / judging process, and then says what happens with it: it starts tomorrow.

This is a very common question because these two verbs are related:

• 始まる = to begin / to start (intransitive)
• 始める = to begin / to start something (transitive)

In this sentence, the review is not being treated as something that someone actively starts as a direct object. Instead, the event itself begins.

So:

• 審査は明日始まる。 = The review starts tomorrow.

But if you wanted to say that someone starts the review, you would use 始める:

• 審査を明日始める。 = We/they will start the review tomorrow.

Because 始まる is intransitive, so it does not take a direct object marked by を.

That means:

• 審査が / 審査は始まる = correct
• 審査を始まる = incorrect

If you want を, you need the transitive verb 始める:

• 審査を始める = to start the review

This is one of the most important verb-pair patterns in Japanese.

Because time expressions like 明日 often work without a particle when they mean when something happens.

So this is completely natural:

• 明日始まる = starts tomorrow

This happens with many common time words:

• 今日行く = go today
• 来年卒業する = graduate next year
• 3時始まる = start at 3 o’clock

You can sometimes add a particle in other contexts, but with common time expressions, no particle is very normal.

Japanese non-past forms like 始まる can mean either:

• present, or
• future

The time word 明日 tells you this sentence is about the future.

So here:

• 始まる = will start / starts

Even though English often prefers will start, Japanese simply uses the non-past form.

始まる is the plain form.
始まります is the polite form.

So the difference is mainly about style and level of politeness, not basic meaning.

• 審査は明日始まる。 = plain / casual / neutral written style
• 審査は明日始まります。 = polite

You might see the plain form in:

• casual conversation
• headlines
• written narration
• informal announcements
• notes or messages

You would use 始まります when speaking politely to someone.

Yes, 審査が明日始まる is also possible, but the nuance changes a little.

Very roughly:

• 審査は明日始まる = As for the review, it starts tomorrow
• 審査が明日始まる = The review is what starts tomorrow / stronger focus on 審査

A simple way to think about it:

• は = topic / contrast / already-established thing
• が = identifies or focuses the subject more directly

In many everyday situations, both are possible, but は feels more like you are talking about the review as the topic.

Not completely. Japanese word order is more flexible than English, as long as the verb stays near the end.

So these are all possible:

• 審査は明日始まる。
• 明日、審査は始まる。
• 明日審査が始まる。

The nuance may shift slightly depending on what you want to emphasize, but they can all mean essentially The review starts tomorrow.

The most important rule here is:

• 始まる comes at the end.

審査 is a noun.

It means something like:

• screening
• examination
• review
• judging

In this sentence, it is the thing being talked about, marked by は.

Many Japanese sentences are built very simply like this:

• noun + は + time + verb

So structurally, this sentence is a very typical Japanese pattern.

Yes. Japanese very often leaves out information that is obvious, unimportant, or not being focused on.

In this sentence, the speaker does not mention who is responsible for starting the review. The sentence only tells you about the event:

• The review starts tomorrow.

If you needed to mention an agent, Japanese could do that, but here it is unnecessary.

This is very normal in Japanese:

• the sentence focuses on what happens
• not necessarily on who does it