daiyokuzyou ha hiroi.

It is read だいよくじょう.

• 大 = big, large
• 浴 = bathe, bathing
• 場 = place

So 大浴場 means something like large public bath or big communal bath area.

When は is used as the topic particle, it is pronounced wa.

So:

• written: 大浴場は広い。
• read aloud: だいよくじょう は ひろい。 → with は pronounced wa

This is one of the first pronunciation exceptions learners meet in Japanese.

は marks the topic of the sentence.

So 大浴場は広い。 is roughly:

• As for the large public bath, it is spacious.
• The large public bath is spacious.

The sentence is talking about 大浴場 and then saying something about it: 広い.

Japanese sentences usually put the main predicate at the end.

In this sentence, 広い is the predicate, meaning is spacious / is wide.

So the structure is:

• 大浴場 = the large public bath
• は = topic marker
• 広い = is spacious

This end-position for the main statement is very normal in Japanese.

Because this sentence is in plain style.

An い-adjective like 広い can end a sentence by itself in plain style:

• 大浴場は広い。

If you want to make it polite, you can say:

• 大浴場は広いです。

Both are correct. The version without です is less formal.

広い is an い-adjective.

That means it behaves differently from nouns and な-adjectives. For example:

• present: 広い = spacious
• negative: 広くない = not spacious
• past: 広かった = was spacious
• past negative: 広くなかった = was not spacious

A common beginner mistake is trying to add だ to it. You do not say 広いだ.

Literally, 広い often means wide, broad, or spacious.

In the case of a bath area or room, spacious is usually the most natural English translation. So 大浴場は広い。 often sounds more natural in English as:

• The public bath is spacious.

rather than the more literal:

• The public bath is wide.

Yes, but the nuance changes.

• 大浴場は広い。 = As for the large public bath, it is spacious.
• 大浴場が広い。 = The large public bath is the one that is spacious or It’s the large public bath that is spacious, depending on context

Very roughly:

• は introduces the topic
• が can sound more like it identifies or highlights the subject

In many simple situations, both may be translated similarly, but the nuance is not identical.

No. Japanese is normally written without spaces.

So this sentence would usually appear as:

大浴場は広い。

Spaces are often added in teaching materials to make the sentence easier for beginners to read.

Yes, in a way.

Japanese often does not use a separate word for it in sentences like this. Once the topic is introduced with は, the rest of the sentence simply describes it.

So:

• 大浴場は = as for the large public bath
• 広い = is spacious

English needs something like it is, but Japanese does not need to say a separate pronoun here.

The polite version is:

大浴場は広いです。

This is the same basic meaning, just more polite. It would be natural in many everyday situations, such as speaking to a customer, a stranger, or someone you want to be polite with.