אם הדו"ח לא מוכן, נכתוב אותו מחר בבוקר.

In the present tense, Hebrew usually does not use a separate word for am / is / are.

So:

• הדו"ח מוכן = The report is ready
• הדו"ח לא מוכן = The report is not ready

This is completely normal Hebrew.
If you wanted was or will be, then Hebrew would use a form of להיות (to be):

• הדו"ח היה מוכן = The report was ready
• הדו"ח יהיה מוכן = The report will be ready

אם means if.

In this sentence, it introduces a condition:

• אם הדו"ח לא מוכן = If the report isn’t ready
• נכתוב אותו מחר בבוקר = we’ll write it tomorrow morning

So the whole sentence is a normal if-clause + result clause structure.

Because it agrees with הדו"ח (the report), which is a masculine singular noun.

So Hebrew uses:

• מוכן for masculine singular
• מוכנה for feminine singular
• מוכנים for masculine plural
• מוכנות for feminine plural

Examples:

• הדו"ח מוכן = The report is ready
• העבודה מוכנה = The assignment/work is ready

The adjective has to match the noun in gender and number.

נכתוב is future tense, meaning we will write.

The sentence is talking about a future result:

• If the report isn’t ready, we’ll write it tomorrow morning.

So Hebrew uses the future form:

• אכתוב = I will write
• תכתוב = you will write / she will write
• יכתוב = he will write
• נכתוב = we will write
• תכתבו = you (plural) will write
• יכתבו = they will write

Here, נ- at the beginning marks we in the future tense.

That’s an excellent question. Hebrew and English handle future conditions differently.

In English, we often use the present tense after if even when the meaning is future:

• If the report isn’t ready, we’ll write it tomorrow.

In Hebrew, for real future situations, you will often see either:

• a present-style predicate, as in this sentence: אם הדו"ח לא מוכן
• or an explicit future with יהיה: אם הדו"ח לא יהיה מוכן

Both can be natural, depending on style and nuance.

So this sentence is perfectly normal Hebrew. It is basically saying:

• If the report is not ready / turns out not to be ready...

אותו means him/it as a direct object pronoun.
Here it means it, referring back to הדו"ח (the report).

So:

• נכתוב = we will write
• נכתוב אותו = we will write it

Hebrew often uses these object pronouns where English uses it, him, her, etc.

Because דו"ח is masculine singular, the pronoun is also masculine singular:

• אותו = him / it (masculine singular)
• אותה = her / it (feminine singular)

You could say נכתוב מחר בבוקר if the object is understood from context, but אותו makes it explicit: we’ll write it.

So:

• נכתוב מחר בבוקר = We’ll write (it) tomorrow morning — object understood from context
• נכתוב אותו מחר בבוקר = We’ll write it tomorrow morning — object clearly stated

Including אותו is very natural and often preferred when referring back to something specific.

דו"ח means report.

The marks inside the word are called gershayim (״). They are often used in Hebrew abbreviations.

So דו"ח is an abbreviation, and it is commonly pronounced roughly like do'ach.

With the definite article ה־, it becomes:

• דו"ח = a report / report
• הדו"ח = the report

Those internal marks are part of standard Hebrew spelling for many abbreviations.

It is commonly pronounced approximately as:

• ha-do'ach

A rough guide:

• ה = ha
• דו"ח = do'ach

The last sound is the Hebrew ח, a throaty sound that English does not really have.

If producing ח is difficult, that is very common for English speakers. A close approximation is fine at first.

Hebrew usually places the direct object fairly close to the verb, especially when it is a pronoun.

So the most natural order here is:

• נכתוב אותו מחר בבוקר = We’ll write it tomorrow morning

This sounds much more natural than putting אותו at the end.

A good general pattern is:

verb + object + time expression

So:

• נכתוב אותו מחר בבוקר
• נקרא את הספר בערב
• נפגוש אותם מחר

מחר בבוקר means tomorrow morning.

It is made of:

• מחר = tomorrow
• בבוקר = in the morning

Literally, it is something like tomorrow, in the morning, but the natural English translation is simply tomorrow morning.

This is a very common time expression in Hebrew.

Yes. אם הדו"ח לא יהיה מוכן is also grammatical and natural.

Compare:

• אם הדו"ח לא מוכן
• אם הדו"ח לא יהיה מוכן

The first is a bit more direct and compact.
The second makes the future meaning more explicit: if the report will not be ready / if the report isn’t going to be ready.

In everyday Hebrew, both patterns can appear.

Yes, this is a normal real future conditional:

• If the report isn’t ready, we’ll write it tomorrow morning.

Hebrew does not need a separate word for then in this kind of sentence. The meaning is clear from the structure alone.

So:

• אם הדו"ח לא מוכן, נכתוב אותו מחר בבוקר.

is complete and natural without adding anything else.