Mam nadzieję, że ten film ci się spodoba.

Because nadzieja is the dictionary form, but after mam it becomes the direct object of the verb mieć (to have), so it goes into the accusative case.

• nominative: nadzieja = hope
• accusative: nadzieję

So mam nadzieję literally means I have hope, and idiomatically it means I hope.

Że means that and introduces the second clause:

• Mam nadzieję = I hope
• że ten film ci się spodoba = that you will like this film

In standard Polish, że is the normal way to connect these parts. So Mam nadzieję, że... is the regular pattern for I hope that...

Ten film means this film or this movie.

A few useful points:

• film in Polish usually means film/movie
• ten is a demonstrative, meaning this or sometimes that, depending on context
• Polish does not have articles like a or the, so ten is not just a substitute for the. It adds pointing or specificity: this particular film

So:

• film = a film / the film / film
• ten film = this film / this particular film

Ci is the dative form of ty (you, singular informal). Here it means to you.

So the structure is roughly:

• ten film = this film
• ci = to you
• się spodoba = will be pleasing / will appeal

Very literally, the sentence is something like:

I hope that this film will appeal to you.

That is why Polish uses ci, not a direct-object form.

Also, ci is the short, unstressed version. The fuller form is tobie.

• ci = neutral, common
• tobie = more emphatic

In this sentence, się is part of the verb expression spodobać się.

This does not mean the film is doing something to itself. So although się often looks reflexive, here you should learn spodobać się as a whole unit meaning:

• to be liked
• to appeal
• to please someone

Very common pattern:

• Film mi się podoba. = I like the film. / The film pleases me.
• Film mi się spodoba. = I will like the film. / The film will appeal to me.

So yes, się is necessary here, but the whole phrase should be learned together.

Because Polish podobać się / spodobać się works differently from English to like.

In English:

• You like the film

In Polish:

• The film pleases you
• Film ci się podoba / spodoba

So grammatically:

• ten film is the subject
• ci means to you
• się spodoba is the verb

That is why film stays in the nominative here.

Yes. Spodoba is a future meaning, even though it looks like a present-tense form.

That happens because spodobać się is a perfective verb. In Polish, perfective verbs do not normally have a present meaning; their present-looking forms refer to the future.

So:

• podoba się = is pleasing / is liked / you like it
• spodoba się = will become pleasing / you will like it

That is why spodoba here means will like or will appeal.

Because spodobać się is especially natural when talking about someone’s reaction to something they are about to watch, hear, read, etc.

Compare:

• lubić = to like in a general or ongoing sense
• spodobać się = to come to like; to appeal to someone

So:

• Mam nadzieję, że ten film ci się spodoba.
  = I hope you’ll like this film.
  This sounds very natural before someone watches it.

If you used lubić, it could sound more like a general preference rather than the immediate experience of this particular film.

Because short pronouns and particles in Polish often follow a preferred order, and with this kind of structure ci się is the normal sequence.

So you usually get:

• podoba mi się
• spodoba ci się
• wydaje mi się

For a learner, the safest approach is to memorize the chunk:

• komuś się podoba
• komuś się spodoba

So here:

• ci się spodoba = you will like

Yes, Polish word order is fairly flexible, though some versions sound more natural in certain contexts.

Your sentence:

• Mam nadzieję, że ten film ci się spodoba.

Other possible orders:

• Mam nadzieję, że ci się spodoba ten film.
• Mam nadzieję, że ten film spodoba ci się.
  This one is possible, but less neutral.

The original version is very natural and balanced. It puts ten film early, which matches English nicely and keeps the sentence easy to process.

Normally, no. In standard Polish, after mam nadzieję followed by a full clause, you use że.

So:

• Mam nadzieję, że ten film ci się spodoba. ✅

Without że, it sounds incomplete or ungrammatical in standard usage.

For formal you, replace ci with panu or pani:

• Mam nadzieję, że ten film panu się spodoba.
• Mam nadzieję, że ten film pani się spodoba.

If you want to emphasize you in the informal singular, you can use tobie instead of ci:

• Mam nadzieję, że ten film tobie się spodoba.

That adds stress, like I hope you will like this film.

The short form ci is the normal neutral choice.