אחרי ההרצאה היא אמרה שהמצגת הייתה ברורה יותר מהספר.

It literally means after the lecture.

• אחרי = after
• ההרצאה = the lecture

The ה־ at the beginning of ההרצאה is the definite article the. So the phrase is simply:

אחרי + ההרצאה = after the lecture

Because two different things come together:

• הרצאה = lecture
• ה־ = the

So when you add the definite article to הרצאה, you get ההרצאה.

This is normal in Hebrew. The first ה is the, and the second ה is part of the noun itself.

היא means she, and אמרה means said in the 3rd person feminine singular past.

So אמרה already tells you she said. That means the pronoun היא is not always strictly necessary.

However, Modern Hebrew often includes the subject pronoun anyway, especially for clarity, flow, or emphasis. So both of these can work:

• היא אמרה שהמצגת הייתה ברורה יותר מהספר
• אמרה שהמצגת הייתה ברורה יותר מהספר

In this sentence, היא makes the subject explicit and natural.

Because the subject is היא = she.

In the past tense, Hebrew verbs agree with the subject in gender and number. So:

• הוא אמר = he said
• היא אמרה = she said

The ־ה ending here marks feminine singular in the past tense.

ש־ means that.

So:

• שהמצגת הייתה ברורה יותר מהספר = that the presentation was clearer than the book

In Hebrew, this ש־ is usually written attached directly to the next word, not as a separate word. That is very common.

Because המצגת means the presentation, while מצגת means just a presentation or presentation in a general sense.

Here the sentence is talking about a specific presentation, so Hebrew uses the definite article:

• מצגת = presentation
• המצגת = the presentation

הייתה means was for a feminine singular subject in the past tense.

Since מצגת is a feminine noun, the verb must agree with it:

• המצגת הייתה = the presentation was

Compare:

• הספר היה = the book was (masculine)
• המצגת הייתה = the presentation was (feminine)

Because adjectives in Hebrew usually agree with the noun in gender and number.

מצגת is feminine singular, so the adjective must also be feminine singular:

• ברור = clear, masculine singular
• ברורה = clear, feminine singular

So:

• ספר ברור = a clear book
• מצגת ברורה = a clear presentation

Yes. Hebrew often makes comparisons with יותר, which means more.

So:

• ברורה = clear
• ברורה יותר = clearer / more clear

This is the normal way to say clearer in Modern Hebrew. Hebrew usually does not have a special adjective ending like English -er here; it uses יותר instead.

Here it means than the book.

After a comparative with יותר (more), Hebrew uses מ־ to mean than:

• יותר מהספר = more/clearer than the book

So in this sentence:

• ברורה יותר מהספר = clearer than the book

You are right that מ־ can also mean from in other contexts. So מהספר can sometimes mean from the book. But after יותר, the meaning is than.

Because מ־ is a prefix in Hebrew. It attaches to the following word.

So:

• מ־ = from / than
• הספר = the book
• מהספר = from the book / than the book, depending on context

This is very normal Hebrew spelling.

The sentence as written is very natural. Hebrew word order is somewhat flexible, but this version is standard and smooth.

The basic idea is:

• noun
• verb
• adjective
• comparative phrase

So:

המצגת הייתה ברורה יותר מהספר

That is the most straightforward way to say it. Hebrew can sometimes move things around for emphasis, but this order is the best neutral choice.

Then היא אמרה would become הוא אמר.

So:

• היא אמרה = she said
• הוא אמר = he said

The rest of the sentence could stay the same, because המצגת is still feminine, so you would still say:

הוא אמר שהמצגת הייתה ברורה יותר מהספר

A natural pronunciation would be roughly:

a-kha-REI ha-har-tza-A, hi am-RA she-ha-mats-geT hai-TA bru-RA yo-TER me-ha-SE-fer

A few useful stress points:

• אחרי → stress on the last syllable: a-kha-REI
• אמרה → am-RA
• הייתה → hai-TA
• ברורה → bru-RA
• יותר → yo-TER
• הספר → ha-SE-fer

Yes. ברור / ברורה often means not only clear in the visual sense, but also clear, understandable, easy to follow.

So in this sentence, ברורה יותר most likely means something like:

• clearer
• more understandable
• easier to follow

That is probably the intended sense here.