kono yakimono ha omoi.

It is read やきもの.

A few readings in the sentence are:

• この = kono
• 焼き物 = yakimono
• は = wa (not ha here)
• 重い = omoi

So the full sentence is read:

この やきもの は おもい。

In this sentence, 焼き物 usually means pottery, ceramic ware, or a ceramic piece/object.

It can refer to things like:

• a bowl
• a plate
• a vase
• pottery in general

One thing to know: 焼き物 can also mean grilled food in some contexts. Japanese often relies on context to decide which meaning is intended. Since the sentence says This pottery is heavy, the meaning here is clearly ceramic ware / pottery.

この must be followed by a noun, while これ stands alone.

• この 焼き物 = this pottery / this ceramic piece
• これ = this

So you can say:

• この 焼き物 は 重い。 = This piece of pottery is heavy.
• これは 重い。 = This is heavy.

But you cannot say この は 重い because この needs a noun after it.

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

This is one of the most important pronunciation exceptions in Japanese:

• は as a normal syllable in a word: usually ha
• は as a particle: wa

So in this sentence:

• written: は
• pronounced: wa

That is why the sentence sounds like この やきもの は おもい.

は marks the topic of the sentence.

Here, the topic is この 焼き物 = this pottery.

The sentence is basically saying:

• As for this pottery, it is heavy.

That is a very common Japanese sentence pattern:

• X は Y
• As for X, it is Y

So:

• この 焼き物 は 重い。
• As for this piece of pottery, it is heavy.

In natural English, we just say This pottery is heavy.

Because 重い is an い-adjective, and it can end a sentence by itself in plain style.

So both of these are possible:

• この 焼き物 は 重い。 = plain / casual
• この 焼き物 は 重いです。 = polite

Unlike nouns and な-adjectives, い-adjectives do not need です to be grammatical.

For example:

• 高い。 = It is expensive / tall.
• 高いです。 = polite version

So the sentence without です is completely normal.

Yes. 重い is an い-adjective.

That means it behaves like this:

• dictionary form: 重い = heavy
• negative: 重くない = not heavy
• past: 重かった = was heavy
• past negative: 重くなかった = was not heavy

With politeness:

• 重いです
• 重くないです or 重くありません
• 重かったです
• 重くなかったです or 重くありませんでした

So in your sentence, 重い is the predicate: it describes the topic この 焼き物.

The structure is:

この 焼き物 + は + 重い

Or more generally:

[noun phrase] + は + [adjective]

So this is a very common pattern:

• この 本 は 面白い。 = This book is interesting.
• その かばん は 高い。 = That bag is expensive.
• この 焼き物 は 重い。 = This pottery is heavy.

Japanese often puts the thing being talked about first, then gives information about it.

The spaces are usually there only for learners.

Normal Japanese writing would usually be:

この焼き物は重い。

Japanese is normally written without spaces between words. Textbooks and beginner materials often add spaces to make it easier to see the parts:

• この
• 焼き物
• は
• 重い

So the spaces are not part of standard spelling; they are just a reading aid.

Yes. You may see:

• 焼き物
• やきもの

Both are fine, depending on the text and intended difficulty level.

Also, Japanese words are often written with a mix of kanji and hiragana, especially when the kanji may be harder for learners. In this word:

• 焼 is the kanji
• きもの is written in hiragana

This mixed writing is very common in Japanese.

In practice, この 焼き物 is the thing being talked about, so in English it feels like the subject: This pottery is heavy.

But grammatically, many Japanese explanations call この 焼き物 the topic, marked by は, rather than the subject.

Japanese often leaves the exact subject implied by context. Here, though, the sentence is straightforward: the topic and the thing being described are the same object.

So for a beginner, it is fine to understand it as:

• topic: this pottery
• description: heavy

You would usually say:

この 焼き物 は 重いです。

That is the polite version of the sentence.

Compare:

• この 焼き物 は 重い。 = plain / casual
• この 焼き物 は 重いです。 = polite

Both mean the same thing. The difference is social tone, not basic meaning.

Yes. You can use the ko-so-a-do set:

• この 焼き物 = this pottery (near the speaker)
• その 焼き物 = that pottery (near the listener / previously mentioned)
• あの 焼き物 = that pottery over there (away from both)
• どの 焼き物 = which pottery

Examples:

• その 焼き物 は 重い。 = That pottery is heavy.
• あの 焼き物 は 重い。 = That pottery over there is heavy.
• どの 焼き物 が 重いですか。 = Which piece of pottery is heavy?

This is a very useful pattern to learn early.