לפני שהאורחים יגיעו, אנחנו נסדר את הסלון ביחד.

Because לפני by itself usually comes before a noun:

• לפני השיעור = before the lesson
• לפני הארוחה = before the meal

But here it is followed by a full clause: האורחים יגיעו = the guests will arrive.

So Hebrew uses לפני ש־ = before + clause:

• לפני שהאורחים יגיעו = before the guests arrive

The ש־ works like that in structure, even though English does not say it here.

That is a very common English-speaker question.

In Hebrew, when you talk about a future event after words like before, when, or after, it is very normal to use the future tense:

• לפני שהאורחים יגיעו = before the guests arrive
• כשהם יבואו = when they come
• אחרי שנאכל = after we eat

So Hebrew and English handle this differently:

• English: before they arrive
• Hebrew: לפני ש... יגיעו

It is one of those places where you should not translate word-for-word from English grammar.

יגיעו comes from the verb להגיע = to arrive.

In this form:

• י־ at the beginning often signals third person in the future
• ־ו at the end signals plural

So יגיעו = they will arrive

That matches the subject האורחים = the guests, which is plural.

A useful comparison:

• הוא יגיע = he will arrive
• הם יגיעו = they will arrive
• אתם תגיעו = you all will arrive

נסדר comes from לסדר, which can mean:

• to arrange
• to organize
• to tidy up

In this sentence, the natural meaning is we will tidy up / arrange.

Grammatically, נסדר is:

• future tense
• first person plural
• so: we will arrange / tidy

The subject אנחנו matches it:

• אנחנו נסדר = we will tidy up

Because Hebrew often allows the subject pronoun to be optional.

You can say:

• נסדר את הסלון ביחד
• אנחנו נסדר את הסלון ביחד

Both are correct.

Adding אנחנו can do a few things:

• make the sentence a little clearer
• add slight emphasis
• sound a bit fuller in context

So the pronoun is not required, but it is perfectly natural.

את marks a definite direct object.

In this sentence:

• הסלון = the living room
• because it is definite, Hebrew puts את before it

So:

• נסדר את הסלון = we will tidy the living room

Important: את does not mean with here.
It usually is not translated into English at all.

Compare:

• אני רואה את הכלב = I see the dog
• אני רואה כלב = I see a dog

You use את before a definite object such as the dog, the room, that book, my friend, and so on.

That ה־ is the Hebrew definite article, equivalent to English the.

So:

• אורחים = guests
• האורחים = the guests

and

• סלון = living room / lounge
• הסלון = the living room

Hebrew attaches the directly to the word as a prefix, instead of writing it as a separate word.

Also notice:

• שהאורחים = ש־
  • ה־
    • אורחים

So the beginning of that word bundle is really made of pieces:

• ש־ = that
• ה־ = the
• אורחים = guests

ביחד means together.

So:

• אנחנו נסדר את הסלון ביחד = we will tidy the living room together

Yes, you can also often say יחד instead of ביחד. In many everyday contexts, both are natural.

For example:

• נעשה את זה ביחד
• נעשה את זה יחד

Both mean we’ll do it together.

In this sentence, ביחד sounds very normal and conversational.

Yes. Hebrew word order is more flexible than English word order.

The given sentence is:

• לפני שהאורחים יגיעו, אנחנו נסדר את הסלון ביחד.

But you could also say:

• אנחנו נסדר את הסלון ביחד לפני שהאורחים יגיעו.

That means the same thing: We’ll tidy the living room together before the guests arrive.

You can also move ביחד a little:

• אנחנו נסדר ביחד את הסלון
• אנחנו ביחד נסדר את הסלון

These are possible, though the original version sounds especially natural.

So the original sentence is not the only correct order; it is just a very standard one.

Because the sentence begins with a subordinate time clause:

• לפני שהאורחים יגיעו = before the guests arrive

Then comes the main clause:

• אנחנו נסדר את הסלון ביחד = we will tidy the living room together

In standard writing, putting a comma after that opening clause is normal and helpful. It works a lot like English punctuation in sentences such as:

• Before the guests arrive, we’ll tidy the living room together.

In casual writing, Hebrew punctuation can be less strict, but the comma here is standard and good style.

A simple transliteration is:

Lifnei sheha-orchim yagi'u, anachnu nesader et hasalon beyachad.

A few pronunciation notes:

• לפני = lif-NEI
• האורחים = ha-or-CHIM
• ח in אורחים is a throaty sound, like the ch in Scottish loch or German Bach
• נסדר = ne-sa-DER
• הסלון = ha-sa-LON
• ביחד = be-YA-chad

You do not have to pronounce it perfectly right away, but it helps to notice that several words are stressed toward the end.