Nem küldjük el a meghívót, ugyanis az ünnepelt elolvasná.

Because Hungarian verbal prefixes usually move after the conjugated verb when the verb is negated.

• Positive, neutral: Elküldjük a meghívót.
• Negative: Nem küldjük el a meghívót.

So el is still part of the verb, but negation pushes it behind the verb. The same kind of thing happens with other prefixes too.

Hungarian often uses the present tense for future meaning when the context makes it clear.

So Nem küldjük el a meghívót can mean:

• We are not sending the invitation
• We won’t send the invitation

Both are possible depending on context.

If you want a more explicitly future form, Hungarian can also say:

• Nem fogjuk elküldeni a meghívót.

But the simple present is very common and natural.

Because Hungarian has two types of verb conjugation:

• indefinite
• definite

You use the definite conjugation when the verb has a definite direct object.

Here the object is a meghívót = the invitation, which is definite, so the verb must be definite too:

• küldjük = we send it / we send the specific thing
• küldünk would be used with an indefinite object, for example küldünk egy meghívót = we are sending an invitation

El- is a verbal prefix, and its exact effect depends on the verb.

Here:

• elküld = send off, send away
• elolvas = read through, read completely

Very often el- gives a sense of completion or carrying the action through to its endpoint. So:

• olvas = read
• elolvas = read all the way through / finish reading

You should not always translate the prefix word-for-word; it is better to learn the full prefixed verb as a unit.

Because -t is the accusative ending, which marks the direct object.

• meghívó = invitation
• meghívót = invitation as the object of the verb

So in this sentence, a meghívót is the thing being sent.

Here ugyanis means something like:

• because
• since
• after all

It introduces an explanation for the first clause.

So:

• Nem küldjük el a meghívót, ugyanis az ünnepelt elolvasná. = We won’t send the invitation, because the honoree would read it.

Compared with mert:

• mert is the most basic everyday word for because
• ugyanis often sounds a bit more explanatory, sometimes a bit more formal or written

In many cases both are possible, but ugyanis often feels like it is adding an explanation to what was just said.

Because the meaning is hypothetical: if we sent the invitation, the honoree would read it.

Hungarian often uses the conditional for this kind of implied consequence.

A fuller version could be:

• Ha elküldenénk a meghívót, az ünnepelt elolvasná. = If we sent the invitation, the honoree would read it.

So elolvasná expresses a result that would happen under that condition.

If you said elolvassa, that would mean reads it / will read it more directly and definitely, not as a hypothetical consequence.

That ending marks the conditional in the definite conjugation, third person singular.

Here that matters because the verb has an understood definite object: the invitation.

Compare:

• elolvasna = would read something
• elolvasná = would read it / would read the specific thing

So the -ná here helps show both:

• conditional meaning
• definite object

Because Hungarian often leaves out an object if it is already obvious from context.

Here the object is clearly a meghívót, mentioned in the first clause, so the second clause does not need to repeat it.

English often prefers a pronoun:

• the honoree would read it

Hungarian can simply say:

• az ünnepelt elolvasná

The verb form already helps show that there is a definite understood object.

Ünnepelt comes from the verb ünnepel = celebrate.

As a noun, az ünnepelt means the person being celebrated, for example:

• the honoree
• the guest of honor
• the birthday person

The best English translation depends on context. In a surprise-party type sentence, it often means the person the event is for.

So it does not mean the celebration itself. It means the person.

Hungarian word order is flexible, but it is not random. It depends a lot on topic, focus, and emphasis.

This sentence has a very natural order:

• Nem küldjük el a meghívót
• ugyanis az ünnepelt elolvasná

In the first clause, the negation creates the standard pattern:

• nem + verb + prefix + object

In the second clause, az ünnepelt is the topic, and the verb follows naturally.

You can change the order for emphasis, but then the sentence may sound more marked. So the version given is a normal, natural way to say it.