הוא נעזר בחברה שלו כדי למלא את הטופס, כי חלק ממנו לא היה ברור.

נעזר means was helped / made use of someone’s help / relied on assistance.

In this sentence, הוא נעזר בחברה שלו means something like he got help from his girlfriend/female friend or he used his girlfriend’s/female friend’s help.

A few useful notes:

• The base idea comes from עזר = to help.
• נעזר is a different verb form that often means to make use of help or to be helped by someone/something.
• So:
  • היא עזרה לו = she helped him
  • הוא נעזר בה = he relied on her help / he was helped by her

It is a slightly more formal or written-style verb than very everyday קיבל עזרה מ־....

Because the verb להיעזר / נעזר normally goes with the preposition ב־, which here means something like by means of, with the help of, or using.

So:

• נעזר ב... = used the help of... / relied on...
• הוא נעזר בחברה שלו = he relied on his girlfriend/female friend

This is just the preposition that this verb requires. It is not the same pattern as English, so it is best learned as a chunk:

• להיעזר ב־
• נעזר ב־

It can technically mean any of these, because חברה has multiple meanings:

• female friend
• girlfriend
• company

In this sentence, context decides the meaning. Most likely meanings are:

• his girlfriend
• his female friend

The meaning his company is grammatically possible, but much less likely here unless the wider context is about business or an organization helping him fill out a form.

So yes, חברה שלו is ambiguous by itself.

Because שלו agrees with the owner/possessor, not with the noun being possessed.

Here:

• חברה = feminine noun
• but the possessor is he = masculine singular

So:

• החברה שלו = his female friend / his girlfriend / his company
• החברה שלה = her female friend / her company

This is very important in Hebrew possessives:

• הספר שלו = his book
• המכונית שלה = her car
• החברה שלו = his girlfriend/female friend/company

The form of של־ depends on whose it is, not on the gender of the noun.

כדי means in order to.

So:

• כדי למלא את הטופס = in order to fill out the form

This is a very common Hebrew structure:

• כדי + infinitive

Examples:

• באתי כדי לעזור = I came in order to help
• הוא למד כדי להצליח = he studied in order to succeed

In everyday speech, people sometimes also just use ל־ without כדי, but כדי makes the purpose especially clear.

Because after כדי, Hebrew normally uses the infinitive.

The infinitive of מילא = to fill out / to fill in is למלא.

So:

• כדי למלא = in order to fill out
• not a past form
• not a present form

You can think of it like this:

• מילא = he filled out
• ממלא = filling out / fills out
• למלא = to fill out

Because הטופס is a definite direct object: the form.

In Hebrew, את marks a direct object when it is definite.

So:

• למלא טופס = to fill out a form
• למלא את הטופס = to fill out the form

This does not mean את is translated as a separate English word. It is a grammar marker.

Yes. טופס means form, usually a document you fill in or fill out.

So:

• טופס = a form
• הטופס = the form

It is a very common modern Hebrew word, especially in bureaucratic, medical, school, or government contexts.

Literally, חלק ממנו means part of it or a part of it.

Breakdown:

• חלק = part
• ממנו = from it / of it / from him, depending on context

Here, ממנו refers to הטופס (the form), so the meaning is:

• part of the form
• more naturally in English: part of it

Even though ממנו can also mean from him, context clearly points to the form here.

This is a very common Hebrew pattern.

The preposition מן / מ־ means from, and when attached to pronoun forms it becomes things like:

• ממנו = from him / from it (masculine)
• ממנה = from her / from it (feminine)

After words like חלק (part), Hebrew often uses מ־ where English uses of:

• חלק ממנו = part of it
• literally: part from it

So this is normal Hebrew usage, even if it sounds unusual from an English point of view.

It refers to הטופס.

So:

• כי חלק ממנו לא היה ברור
• because part of it was not clear

Since טופס is a masculine noun, the pronoun is masculine too:

• טופס = masculine
• therefore ממנו

If the noun were feminine, you would expect ממנה instead.

Because ברור agrees with חלק, not with טופס.

The subject of the clause is:

• חלק ממנו = part of it

The main noun there is חלק, and חלק is masculine singular.

So:

• חלק ... לא היה ברור = part ... was not clear

If the subject were a feminine noun, then you would use the feminine form:

• הנקודה לא הייתה ברורה = the point was not clear

כי means because here.

So the second half of the sentence gives the reason:

• הוא נעזר בחברה שלו כדי למלא את הטופס
• כי חלק ממנו לא היה ברור
• He got help from his girlfriend/female friend to fill out the form, because part of it was not clear.

Hebrew כי can have a few different uses in other contexts, but in this sentence it clearly means because.

Yes, it is natural and standard.

The structure is:

• הוא נעזר בחברה שלו = main action
• כדי למלא את הטופס = purpose
• כי חלק ממנו לא היה ברור = reason

So the sentence flows as:

1. what he did
2. what for
3. why

That is a very normal Hebrew sentence pattern.

Yes. This version is correct and fairly natural, but slightly on the more formal/written side because of נעזר.

A more everyday version might be:

• הוא ביקש מהחברה שלו לעזור לו למלא את הטופס, כי חלק ממנו לא היה ברור.
  • He asked his girlfriend/female friend to help him fill out the form, because part of it wasn’t clear.

Or:

• הוא קיבל עזרה מהחברה שלו במילוי הטופס, כי חלק ממנו לא היה ברור.
  • He got help from his girlfriend/female friend in filling out the form, because part of it wasn’t clear.

The original sentence is still perfectly good Hebrew. It just uses a somewhat more formal verb choice.