המאמץ שלך עזר לנו לסיים בזמן.

Because with של-phrases, Hebrew often uses the definite article ה־ on the noun:

• המאמץ שלך = your effort
• literally, the effort of yours

This is the normal way to say a specific possessed thing in Hebrew.

If you say מאמץ שלך without ה־, it can sound more like an effort of yours rather than your effort.

שלך means your.

For singular you, the spelling is usually the same for masculine and feminine, but the pronunciation changes:

• to a man: שֶלְךָ = shelkha
• to a woman: שֶלָּךְ = shelakh

So this sentence could be addressed to either a man or a woman, depending on pronunciation.

Other forms are:

• שלכם = your (masculine plural / mixed group)
• שלכן = your (feminine plural)

Because the subject is המאמץ שלך (your effort), and מאמץ is a masculine singular noun.

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

• המאמץ ... עזר = the effort ... helped
• if the subject were feminine singular, you would use עזרה

For example:

• העזרה שלך עזרה לנו = your help helped us

So the verb matches המאמץ, not the person being spoken to.

Because the verb לעזור (to help) normally takes ל־ in standard Hebrew:

• לעזור למישהו = to help someone
• עזר לנו = helped us
  literally: helped to us

So:

• לנו = to us
• אותנו would be a direct object, and that is not the standard pattern with עזר

This is one of those places where Hebrew grammar does not match English grammar word-for-word.

לסיים is the infinitive to finish.

After עזר (helped), Hebrew can use an infinitive to show what someone was helped to do:

• עזר לנו לסיים = helped us finish
• literally: helped us to finish

This is very natural Hebrew.

The verb is from לסיים = to finish / complete.

Here, בזמן means on time.

So:

• לסיים בזמן = to finish on time

Literally, ב־ means in / at, and זמן means time, but together בזמן often means on time in everyday usage.

Depending on context, it can sometimes feel close to in time, but in this sentence on time is the best translation.

Yes. This word order is completely natural:

• המאמץ שלך = subject
• עזר = verb
• לנו = indirect object
• לסיים בזמן = infinitive phrase

So the sentence follows a very normal pattern:

[subject] + [verb] + [who was helped] + [what they were helped to do]

Hebrew word order can be flexible, but this version is straightforward and standard.

A good approximation is:

ha-ma-a-MATZ

A few notes:

• ה = ha
• the א in the middle can create a slight break: ma-amatz
• ץ at the end sounds like ts
• the stress is on the last syllable: -matz

So: המאמץ = ha-ma'amatz

Many modern speakers pronounce the break very lightly, but it is still useful to notice it.

Yes. They are related.

• מאמץ = effort
• להתאמץ = to make an effort / to try hard

So if you already know אני מתאמץ = I am trying / making an effort, then מאמץ is the noun form connected to that same idea.

That makes this sentence easy to feel as:

Your effort helped us finish on time.

More or less, yes:

• המאמץ = the effort
• שלך = of yours / your
• עזר = helped
• לנו = to us
• לסיים = to finish
• בזמן = on time

So the literal structure is something like:

The effort of yours helped to us to finish on time.

That is not natural English, but it shows how the Hebrew sentence is built. The natural English translation is:

Your effort helped us finish on time.