tanin no mono wo tukawanaide kudasai.

他人 means another person, other people, or sometimes strangers, depending on context.

In this sentence, 他人の物 means things that belong to other people.

A useful nuance:

• 他人 often feels a little more distant than ほかの人
• it can suggest someone who is not you or not part of your close in-group

So this sentence is not about your own things. It is specifically about someone else’s belongings.

The particle の connects nouns. Here it shows possession or relationship.

So:

• 他人 = other people / other persons
• 物 = thing / object / belongings
• 他人の物 = other people’s things

It works a lot like English 's or of.

Examples:

• 私の本 = my book
• 先生の車 = the teacher’s car
• 他人の物 = other people’s things

The kanji 物 has more than one reading, and the reading depends on the word.

Here, 物 is the standalone noun もの, meaning thing or object.

So:

• 物 = もの in this sentence

A learner might know 物 from words like:

• 動物 = どうぶつ = animal
• 買い物 = かいもの = shopping
• 食べ物 = たべもの = food

Kanji often have different readings depending on whether they appear alone or inside compounds.

The particle を marks the direct object of the verb.

The verb here is 使う = to use.

So:

• 物を使う = to use a thing
• 他人の物を使わないでください = please do not use other people’s things

In other words, を shows what is being used.

It comes from the verb 使う (to use).

Step by step:

1. Dictionary form: 使う
2. Negative plain form: 使わない
3. Add でください: 使わないでください

So 使わないでください means please do not use.

This pattern is very common:

• 食べないでください = please do not eat
• 入らないでください = please do not enter
• 話さないでください = please do not speak

〜ないでください is a polite way to ask someone not to do something.

It is usually translated as:

• please don’t ...
• please do not ...

It is a request, but depending on context, it can sound like an instruction or a rule, especially on signs or notices.

So here:

• 使わないでください = please do not use

It is polite, but still firm enough for warnings, classroom rules, posted notices, and so on.

Yes. Both can express prohibition, but the nuance is a little different.

• 使わないでください = please do not use
  
  • polite request
  • common in instructions and signs
• 使ってはいけません = you must not use / it is not allowed to use
  
  • sounds more rule-based or strict

So if you are telling people politely not to use something, 使わないでください is very natural.

Japanese often leaves out the subject when it is understood from context.

In English, you might say:

• Please do not use other people’s things.

The hidden subject is basically you.

Japanese usually does not need to say あなたは here, because it is obvious that the instruction is directed at the listener or reader.

So the sentence is natural without a stated subject.

Japanese normally puts the main verb at the end.

So the order is often:

[topic/context] + [object] + [verb]

Here:

• 他人の物 = other people’s things
• を = object marker
• 使わないでください = please do not use

That is standard Japanese word order.

Yes. It is very common to write it as もの instead of 物.

So you may also see:

• 他人のものを使わないでください

Both are correct.

Using もの in hiragana can feel a little softer or easier to read, especially in everyday writing. Using 物 in kanji is also completely normal.

Both relate to other people, but they are not exactly identical.

• 他人 = other people / another person / outsiders / non-family / strangers
• 他の人 = other people / another person

他の人の物 is also understandable and natural in many situations.

But 他人の物 is a very common set phrase meaning things belonging to others. It sounds a bit more fixed and idiomatic in warnings like this.

Yes, it is natural.

It sounds like something you might see:

• on a classroom sign
• in school rules
• in workplace instructions
• in a parent’s warning to a child

It is clear, standard, and polite.

A very similar version you might also see is:

• 他人のものを勝手に使わないでください。

Here 勝手に means without permission / on your own, which makes the warning even more specific:

• Please do not use other people’s things without permission.

• 使わないで = don’t use / please don’t use
  
  • less formal
  • depends more on tone and context
• 使わないでください = please do not use
  
  • more polite and complete

So 使わないでください is better for polite instructions, notices, and formal speech.

Usually, 物 means a thing, especially a physical item or possession.

In 他人の物, it strongly suggests:

• belongings
• personal items
• property

So the sentence is about using something that belongs to someone else, such as:

• a pen
• a phone
• clothes
• school supplies
• tools

It is not mainly about abstract things here.