watasi ha izyou wo mitukemasita.

は marks 私 as the topic of the sentence: as for me, ....

So 私は異常を見つけました presents the sentence as talking about me and what I did.

If you used が instead, it would put more focus on I as the subject, as if answering a question like Who found the abnormality? In many situations, は is the more neutral choice when introducing what someone did.

を marks the direct object of the verb. In other words, it shows what was found.

• 異常を見つけました
• found an abnormality / found something abnormal

The verb 見つける is a transitive verb, so it takes an object marked by を.

見つけました is the polite past form of 見つける.

Breakdown:

• dictionary form: 見つける
• polite non-past: 見つけます
• polite past: 見つけました

So 見つけました means found in a polite style.

Yes. 見つけました is past tense, so the action of finding already happened.

By contrast:

• 見つけます = find / will find
• 見つけました = found

A natural reading is:

わたし は いじょう を みつけました
watashi wa ijō o mitsukemashita

A few pronunciation notes:

• は is written ha but pronounced wa when used as a particle.
• を is usually pronounced o in modern Japanese.
• 異常 is いじょう.

異常 often means something like:

• abnormality
• something unusual
• something wrong
• an anomaly

It is often used in technical, medical, mechanical, or formal contexts. It does not just mean strange in a casual way; it often suggests that something is not normal in an important or problematic sense.

For example, it could refer to:

• a machine malfunction
• abnormal test results
• an irregularity in data
• a suspicious condition

Yes, very often.

Japanese frequently leaves out subjects and topics when they are clear from context. So in a real conversation, people might simply say:

異常を見つけました。

That can still mean I found an abnormality, as long as the context makes it clear who is speaking or acting.

Including 私 makes the subject/topic more explicit.

Japanese word order is more flexible than English, but the most natural basic order here is:

私は異常を見つけました。

This follows the common pattern:

topic + object + verb

Because particles show each word's role, some rearrangement is possible, but the verb normally comes at the end.

For example, 異常を私は見つけました is possible, but it gives a different emphasis and is less neutral.

Japanese does not have articles like a, an, or the.

So 異常 could be understood as:

• an abnormality
• the abnormality
• something abnormal

The exact interpretation depends on context.

Yes, it sounds polite because of 見つけました.

It is not extremely formal, but it is appropriate for:

• speaking to someone you do not know well
• workplace communication
• reporting information politely

A plain-style version would be:

私は異常を見つけた。

That is less polite and more casual.

The plain-form version is:

私は異常を見つけた。

Comparison:

• polite: 見つけました
• plain: 見つけた

Both are past tense. The difference is politeness, not meaning.

No. They are related in writing, but they mean different things.

• 見る = to see / to look at
• 見つける = to find / to discover / to spot

So 見つける is not just to see something; it means you noticed or found it.

No. Japanese is normally written without spaces.

So the standard written form is:

私は異常を見つけました。

The spaced version is often used only for learners to make the parts easier to see.