mousikomisyo no ue no ran ni namae wo kaite kudasai.

A natural breakdown is:

• 申込書 = application form
• の = of / on / belonging to; it links nouns
• 上 = top, upper part
• の = another noun-linking of
• 欄 = box, column, field, blank
• に = in / on / into a place
• 名前 = name
• を = marks the direct object
• 書いてください = please write

So the structure is basically:

[application form] [top field] [in] [name] [write please]

More naturally in English: Please write your name in the upper field on the application form.

Because Japanese often chains nouns together.

Here, the phrase is:

申込書 の 上 の 欄

This works like:

• 申込書の上 = the top of the application form
• 申込書の上の欄 = the field at the top of the application form

So each の connects one noun phrase to the next.

You can think of it like this:

• A の B = B of A / B on A / A’s B

Examples:

• 学校の先生 = the school’s teacher / teacher at the school
• 机の上 = the top of the desk / on the desk
• 机の上の本 = the book on the desk

So the double の is not strange; it is just a noun chain.

上の欄 means the upper field / the box at the top / the top section.

• 上 = upper part, top
• 欄 = a space on a form, a box to fill in, a column, or an entry field

In this sentence, 欄 is the important clue that this is talking about a form. So 上の欄 is not just the top in a vague sense; it means the field near the top of the form.

It usually means the upper entry field on the application form.

Because the sentence includes 欄, the listener understands that this is about a place where you write information. So the phrase refers to the box/blank/field located near the top of the form, not just the top edge of the paper.

If it only said 申込書の上に, that might sound more like on top of the application form or on the upper part of the form. But 欄 makes it specifically a fill-in area.

に marks the place where the writing goes.

In Japanese, with verbs like 書く (to write), the place you write in/on is often marked with に.

So:

• 欄に = in the field
• 紙に書く = write on paper
• ノートに名前を書く = write your name in/on the notebook

Here, 欄に名前を書く means write your name in that field.

Because 名前 is the thing being written, so it is the direct object of 書く.

• を marks the direct object
• 書く is a transitive verb: you write something

So:

• 名前を書く = write a name
• 住所を書く = write an address

If you used が, it would not fit the normal pattern here. The sentence is not saying the name does something; it is saying please write the name.

書いてください is a polite request: please write.

It comes from:

• dictionary form: 書く = to write
• て-form: 書いて
• 書いてください = please write

So the pattern is:

• Verb て-form + ください = please do ...

Examples:

• 見てください = please look
• 読んでください = please read
• 待ってください = please wait

If the sentence ended with 書く, it would not be a request. It would sound like a plain statement or dictionary form.

書く is a -ku verb, and its て-form changes like this:

• 書く → 書いて

This is a standard pattern:

• く → いて
• 聞く → 聞いて
• 歩く → 歩いて

One important exception is:

• 行く → 行って (not 行いて)

So in this sentence:

• 書く → 書いて
• 書いてください = please write

Yes, ～てください is a polite and standard way to give instructions or make requests.

This sentence sounds natural in places like:

• offices
• forms and paperwork situations
• customer service
• classroom instructions

It is polite, but not extremely formal. It is the normal polite style.

A rough politeness comparison:

• 名前を書いて。 = write your name (casual)
• 名前を書いてください。 = please write your name (polite, standard)
• お名前をご記入ください。 = please fill in your name (more formal, more official)

Yes. A more formal or official version might be:

• 申込書の上の欄に名前をご記入ください。

Here, ご記入ください means please fill in / please enter and is more common in formal written instructions on forms.

Compared with 書いてください:

• 書いてください = plain polite, very understandable
• ご記入ください = more formal, more business-like

Both are correct, but ご記入ください sounds more like something printed on an actual form.

Here are the common readings:

• 申込書 = もうしこみしょ
• の = の
• 上 = うえ
• の = の
• 欄 = らん
• に = に
• 名前 = なまえ
• を = written を, pronounced お
• 書いて = かいて
• ください = ください

So the full sentence is read:

もうしこみしょ の うえ の らん に なまえ を かいて ください。

That is just how the particle works in modern Japanese.

The object marker is written with the kana を, but in standard modern pronunciation it is usually pronounced お.

So:

• 名前を is pronounced なまえを in very careful explanation, but in normal speech it sounds like なまえお

Japanese learners usually learn:

• write: を
• say: お

Yes. In Japanese, words like your, my, and the are often omitted when the meaning is obvious from context.

On a form, if someone says:

名前を書いてください。

it naturally means:

Please write your name.

Japanese often leaves out information that both speaker and listener already understand. Since this is an instruction about filling in a form, your name is the obvious meaning.