השעון המעורר החדש חזק יותר, ולכן היום לא פספסתי את האוטובוס.

In the present tense, Hebrew usually does not use a separate word for is / are / am in sentences like this.

So:

השעון המעורר החדש חזק יותר
literally looks like: the new alarm clock louder/stronger more

but it means:

The new alarm clock is louder.

This is completely normal in Hebrew.

Compare:

• הוא עייף = He is tired
• הבית גדול = The house is big
• השעון חזק יותר = The clock is louder

If you wanted past or future, Hebrew would usually use forms of היה:

• השעון היה חזק יותר = The clock was louder
• השעון יהיה חזק יותר = The clock will be louder

Because in Hebrew, when a noun phrase is definite, its adjectives and adjective-like modifiers usually become definite too.

Here:

• השעון = the clock
• המעורר = the waking / alarm
• החדש = the new

Together:

השעון המעורר החדש = the new alarm clock

So the ה־ is not being repeated randomly. Hebrew is showing that the whole phrase is definite.

A useful comparison:

• שעון מעורר חדש = a new alarm clock
• השעון המעורר החדש = the new alarm clock

This is very common with adjectives in Hebrew:

• ספר חדש = a new book
• הספר החדש = the new book

Not really. It is better understood here as noun + modifier, not a classic construct chain.

• שעון = clock
• מעורר = literally waking / that wakes, from the verb לעורר = to wake up / awaken

So שעון מעורר is literally something like a waking clock, which functions as alarm clock.

Why this matters:

In a true construct chain, the first noun normally does not take ה־ directly. But here we get:

השעון המעורר החדש

That fits a noun followed by modifiers much better.

So for a learner, the safest way to understand it is:

• שעון = noun
• מעורר = adjective-like participle modifying it
• חדש = adjective modifying it too

Yes, חזק often means strong, but with sounds it can also mean loud or powerful.

So when talking about an alarm clock, חזק יותר naturally means:

• stronger in a literal sense, but
• more naturally in English: louder

This is a normal Hebrew usage. Hebrew often uses the same word where English makes a distinction.

For example:

• רוח חזקה = a strong wind
• מוזיקה חזקה = loud music
• שעון מעורר חזק = a loud/powerful alarm clock

So in this sentence, חזק יותר is best understood as louder.

Hebrew usually forms comparatives with:

adjective + יותר = more + adjective / -er

So:

• חזק = strong / loud
• חזק יותר = stronger / louder

Hebrew often leaves the comparison target unstated if it is understood from context.

So חזק יותר here means something like:

• louder than before
• louder than the old one
• louder than it used to be

If you want to say than explicitly, Hebrew uses מ־ or יותר מ־:

• חזק יותר מהשעון הישן = louder than the old clock

But in your sentence, the comparison target is implied, so it does not need to be said.

ולכן means and therefore, and so, or simply therefore.

It is made of:

• ו־ = and
• לכן = therefore / therefore so / for that reason

So:

השעון המעורר החדש חזק יותר, ולכן היום לא פספסתי את האוטובוס.

means:

The new alarm clock is louder, and therefore/so today I didn’t miss the bus.

It links cause and result:

• cause: the alarm clock is louder
• result: I didn’t miss the bus today

In everyday speech, Hebrew speakers might also use אז for so, but ולכן is very natural and a bit more explicit.

Hebrew word order is flexible, and adverbs like היום often come near the start of the clause to set the time frame.

So:

ולכן היום לא פספסתי את האוטובוס
means roughly:

and therefore, today, I didn’t miss the bus

Placing היום early gives it a little focus. It tells you right away that this statement is about today.

You could also hear:

• ולכן לא פספסתי היום את האוטובוס
• ולכן לא פספסתי את האוטובוס היום

These are all possible, but the emphasis shifts slightly.

In your sentence, היום sounds natural because it sets up the outcome for today specifically.

Because standard Hebrew negates a finite verb with לא placed before it.

So:

• פספסתי = I missed
• לא פספסתי = I didn’t miss

This is the normal pattern in past, present, and future:

• לא פספסתי = I didn’t miss
• אני לא מפספס = I don’t miss / I’m not missing
• לא אפספס = I won’t miss

So the placement of לא here is exactly what you should expect.

פספסתי is the past tense, first person singular form of לפספס.

That means it means:

I missed
or, depending on context, I failed to catch / I messed up / I let slip

In this sentence:

לא פספסתי את האוטובוס = I didn’t miss the bus

The ending ־תי is the usual marker for I in the past tense.

For example:

• כתבתי = I wrote
• שמעתי = I heard
• פספסתי = I missed

Also, this same past form works for both male and female speakers:

• a man can say פספסתי
• a woman can also say פספסתי

Yes, לפספס is a very common and natural verb in everyday Hebrew for missing a bus, train, chance, class, and so on.

Examples:

• פספסתי את האוטובוס = I missed the bus
• פספסתי את הרכבת = I missed the train
• פספסתי הזדמנות = I missed an opportunity

There is also a more formal verb, להחמיץ:

• החמצתי את האוטובוס

This also means I missed the bus, but לפספס is extremely common in speech and feels very natural here.

Because את marks a definite direct object in Hebrew.

Here, האוטובוס means the bus, which is definite, so Hebrew uses את:

• פספסתי את האוטובוס = I missed the bus

Important point: את does not mean with here.
It is just a grammatical marker showing that the direct object is definite.

Compare:

• פספסתי אוטובוס = I missed a bus
• פספסתי את האוטובוס = I missed the bus

So the presence of את tells you the speaker means a specific, known bus.

Not always. היום can mean either:

• today
• or sometimes nowadays / these days

Context tells you which one is intended.

In your sentence:

ולכן היום לא פספסתי את האוטובוס

it clearly means today, because it refers to a specific event: not missing the bus on this particular day.

If it meant nowadays, the sentence would sound quite different in context. Here, the natural reading is definitely today.