Υποθέτεις ότι θα πετύχεις πιο εύκολα τον στόχο σου, αν διαβάζεις μόνο μία φορά την εβδομάδα;

Υποθέτεις comes from υποθέτω and is the 2nd person singular present form, so it means you assume / you suppose.

In this sentence it works like:

• Υποθέτεις ότι...; = Do you suppose that...?

Greek often leaves out the subject pronoun εσύ because the verb ending already shows who the subject is.

Greek does not use an auxiliary like English do to form ordinary yes/no questions.

So English:

• Do you suppose...?

becomes Greek:

• Υποθέτεις...;

A Greek yes/no question is usually shown by:

• intonation in speech
• the Greek question mark, which looks like ;

So the final ; is what tells you this is a question in writing.

ότι means that and introduces a subordinate clause.

So:

• Υποθέτεις ότι θα πετύχεις...
  = You suppose that you will achieve...

It links the main verb Υποθέτεις with the idea being supposed.

In Modern Greek, πως can often also mean that in similar contexts, but ότι is completely normal and clear here.

θα πετύχεις is the future form: you will succeed / you will achieve.

It is made of:

• θα = future marker
• πετύχεις = the form used after θα

The verb πετυχαίνω means things like:

• to succeed
• to achieve
• to hit/reach a target or goal

Here πετύχεις τον στόχο σου means achieve your goal.

This future form presents the achievement as a single complete result, which fits well with the idea of reaching a goal.

After αν (if), Greek normally does not use θα.

So Greek says:

• αν διαβάζεις = if you study / if you are studying

not:

• αν θα διαβάζεις in standard usage here

In this sentence, διαβάζεις is present tense and expresses a habitual or repeated action:

• if you study only once a week

That matches the meaning very well, because the sentence is talking about someone's regular study pattern.

This is about aspect.

• διαβάζεις = imperfective idea, focusing on an ongoing or repeated action
• διαβάσεις = perfective idea, focusing on a single complete act

Here the meaning is habitual:

• if you study only once a week

So διαβάζεις is the natural choice, because it describes a repeated routine.

If you said αν διαβάσεις μόνο μία φορά, it would sound more like:

• if you study/read only once
  on one particular occasion

So the present διαβάζεις is better for a general pattern.

Yes, διαβάζω can mean both read and study.

The exact meaning depends on context.

For example:

• Διαβάζω ένα βιβλίο = I’m reading a book
• Πρέπει να διαβάσω για τις εξετάσεις = I have to study for the exams

In your sentence, because it talks about reaching a goal and doing something only once a week, study is the more natural meaning.

πιο εύκολα means more easily.

It is formed with:

• πιο = more
• εύκολα = easily

Greek often makes comparatives with πιο + adjective/adverb, and that is extremely common and natural.

There is also a one-word comparative:

• ευκολότερα = more easily

So both are possible:

• πιο εύκολα
• ευκολότερα

The version with πιο is very common in everyday Greek.

στόχος is a masculine noun meaning target or goal.

Here it is the direct object of πετύχεις, so it appears in the accusative:

• nominative: ο στόχος
• accusative: τον στόχο

And:

• σου = your

So:

• τον στόχο σου = your goal

Literally, it is the goal of yours, but in natural English we just say your goal.

This expression means once a week.

Breakdown:

• μία φορά = one time / once
• την εβδομάδα = literally the week

In Greek, time expressions like this often use the accusative in an adverbial way:

• μία φορά την ημέρα = once a day
• δύο φορές τον μήνα = twice a month
• μία φορά την εβδομάδα = once a week

So την εβδομάδα is accusative and functions like per week or a week in English.

Also, μία is feminine because φορά is feminine.

Because the numeral one agrees with the noun it modifies.

• φορά is feminine
• so Greek uses the feminine form μία

Compare:

• μία φορά = one time / once
• ένας στόχος = one goal
• ένα βιβλίο = one book

So μία φορά is simply grammatical agreement.

Yes. Greek word order is more flexible than English because the endings often show the grammatical roles.

For example, you could also say:

• Αν διαβάζεις μόνο μία φορά την εβδομάδα, υποθέτεις ότι θα πετύχεις πιο εύκολα τον στόχο σου;

That would put the if-clause first.

The original version starts with Υποθέτεις and gives a slightly more direct focus to the speaker’s question: Do you suppose... ?

So the original order is very natural, but it is not the only possible one.

In Greek, ; is the question mark.

So:

• ... εβδομάδα; = this is a question

This is one of the first punctuation differences English speakers usually notice.

For comparison:

• English question mark: ?
• Greek question mark: ;

So even though it looks like an English semicolon, in Greek it marks a question.