mousikomisyo wo dasu mae ni, mou itido mite kudasai.

It is read もうしこみしょ.

Breakdown:

• 申込 = application, sign-up
• 書 = document, form, written paper

So 申込書 means application form.

A small note: 申込 comes from the verb 申し込む, which means to apply or to sign up.

That is the basic meaning of 出す, but in Japanese it also has several extended meanings depending on context.

With documents like 申込書, レポート, or 宿題, 出す often means:

• to hand in
• to submit
• to turn in
• to send in

So 申込書を出す is a very natural expression for submitting an application form.

Because 申込書 is the direct object of 出す.

In this sentence:

• 申込書を出す = to submit the application form

The particle を marks the thing affected by the verb.

Even though English might focus on the action submit, Japanese still treats the application form as the direct object of 出す.

Because verb dictionary form + 前に means before doing something.

Pattern:

• V dictionary form + 前に = before doing V
• Noun + の + 前に = before N

So:

• 出す前に = before submitting

This is the normal grammar pattern.
出した前に is not correct here.

A useful comparison:

• 出す前に = before submitting
• 出した後で = after submitting

前に sets up a time relationship: before X, do Y.

So the structure is:

• 申込書を出す前に = before submitting the application form
• もう一度見てください = please look/check once more

It tells you that the checking should happen first, and the submission should happen after that.

もう一度 means one more time or once again.

• もう = more
• 一度 = one time

So もう一度見てください means please look at it once more.

In many cases, yes, it works like again in English. But もう一度 often feels a little more literally like one more time.

The object is omitted because it is obvious from context.

The sentence is talking about the application form, so the implied meaning is something like:

• 申込書をもう一度見てください
• 内容をもう一度見てください

Japanese very often leaves out words that are already understood.

So even though the second half only says please look once more, the listener naturally understands please look over the application form once more.

In this sentence, it is closer to please check or please look over than just please look at.

The verb 見る has a broad range of meanings, including:

• see
• look
• watch
• check
• examine

Because this is about an application form, 見てください means something like:

• please check it again
• please review it once more
• please look it over once more

It is a polite request.

Grammar:

• て-form + ください = please do ...

So:

• 見てください = please look / please check

It is softer than a direct command, but it still tells someone what to do.

Depending on context, it can sound:

• politely instructive
• like a request
• like a notice or reminder

The comma separates the introductory time phrase from the main request.

So the sentence is structured like this:

• 申込書を出す前に、 = before submitting the application form,
• もう一度見てください。 = please check it once more.

The comma is natural and helps readability, especially when the sentence begins with a longer clause. It is not absolutely required in every case, but it is very common.

No. In normal Japanese writing, this sentence would usually be written without spaces:

申込書を出す前に、もう一度見てください。

Spaces are often added in beginner materials to make the sentence easier to read, but standard Japanese does not normally separate words with spaces.

Yes. 確認してください would also be very natural.

Compare:

• 見てください = please look/check
• 確認してください = please confirm/check

確認してください sounds a little more formal and explicitly means confirm/check carefully.
見てください is a bit simpler and more general.

So:

• 申込書を出す前に、もう一度確認してください。 would be a very natural alternative.