הפעם אני אבוא בזמן.

The noun פעם means time in the sense of an occurrence/occasion.
With the definite article ה־, הפעם literally looks like the time/this occasion.

In everyday Hebrew, הפעם is the normal way to say this time.

Examples:

• הפעם אני אצליח — This time I’ll succeed
• בפעם הבאה — next time

So this is something best learned as a very common expression.

אבוא is future tense, first person singular: I will come.

It comes from the verb לבוא — to come.

So:

• אבוא — I will come
• תבוא — you will come / she will come
• יבוא — he will come
• נבוא — we will come

Hebrew usually builds the future directly into the verb, instead of adding a separate word like will.

Because Hebrew verbs already show the subject, אני is often optional here.

So both are possible:

• הפעם אני אבוא בזמן
• הפעם אבוא בזמן

Adding אני can:

• make the sentence clearer
• add a little emphasis
• sound more natural in conversation

So אני is not required for grammar, but it is very normal.

Because in Hebrew, future meaning is usually built into the verb itself.

English:

• I will come

Hebrew:

• אבוא

So אבוא already includes both:

• the subject I
• the future meaning will come

That is why there is no separate word corresponding to English will.

Not completely. לבוא is a very common verb, but its forms are somewhat irregular, so it is best learned as its own pattern.

Some common forms:

• infinitive: לבוא — to come
• present masculine singular: בא
• present feminine singular: באה
• past: באתי — I came
• future: אבוא — I will come

Because it is so common, learners usually memorize its main forms early.

Here בזמן means on time.

It is made of:

• ב־ — in / at
• זמן — time

So literally it looks like in time, but in this sentence the natural meaning is on time / punctually.

So:

• אבוא בזמן = I’ll come on time

Because the preposition ב־ is a prefix in Hebrew. It attaches directly to the following word.

So:

• ב־
  • זמן = בזמן

This is very common in Hebrew. The same happens with other one-letter prefixes, such as:

• ל־ — to
• כ־ — as / like
• ו־ — and

Yes. Depending on context, בזמן can sometimes mean things like during the time of or at the time of.

But in a short sentence like אני אבוא בזמן, the natural meaning is clearly on time.

So here you should understand it as punctually, not as during some period.

Putting הפעם first gives it emphasis: This time...

It makes the sentence feel a bit contrastive, as if the speaker means:

• This time, I’ll come on time
• maybe unlike other times

This is very natural Hebrew word order. Hebrew often puts the topic or emphasized element first.

Yes, Hebrew word order is fairly flexible.

For example, these are also possible:

• הפעם אבוא בזמן
• אני אבוא בזמן הפעם (possible, but less natural in many situations)

The version הפעם אני אבוא בזמן sounds very natural because:

• הפעם sets the topic
• אני names the subject
• אבוא בזמן gives the action

So the original sentence is a very normal choice.

It is pronounced roughly a-VO, with the stress on the last syllable.

The whole sentence is approximately:

• ha-PA'am a-NI a-VO biz-MAN

A few notes:

• הפעם = ha-PA'am
• אני = a-NI
• אבוא = a-VO
• בזמן = biz-MAN

Often, yes.

Using הפעם frequently implies a contrast with previous occasions. So it can sound like:

• This time I’ll be on time
• maybe unlike before

That idea is not stated directly as grammar, but it is a very common nuance of the sentence.