Learn Hardcore Greek: Καληνύχτα, θα συνεχίσουμε αύριο, γιατί είμαι πολύ κουρασμένος. - Good night, we will continue tomorrow, because I am very tired.

Καληνύχτα is a fixed expression meaning good night. It comes historically from καλή νύχτα (good night), but in modern everyday Greek it is very commonly written as one word when used as a greeting or farewell.

You may still also see καλή νύχτα in some contexts, especially when the phrase is felt more literally, but καληνύχτα is extremely common as the set expression.

Why is there θα before συνεχίσουμε?

Θα is the particle used to form the future in Modern Greek. So:

συνεχίζουμε = we continue / we are continuing
θα συνεχίσουμε = we will continue

Unlike English, Greek does not usually use a separate verb like will. Instead, it uses θα plus the verb form.

Why is it συνεχίσουμε and not συνεχίζουμε?

After θα, Greek often uses a form based on the perfective stem when talking about a single complete future action.

So:

θα συνεχίσουμε = we will continue
συνεχίζουμε by itself usually means we continue / we are continuing

This is part of an important Greek pattern: many verbs have an imperfective form and a perfective form. English speakers often notice this because English does not mark this distinction in the same way.