אני לא מכירה את המושג.

Word by word:

• אני — I
• לא — not
• מכירה — know / am familiar with (said by a female speaker)
• את — the marker used before a definite direct object
• המושג — the concept / the term / the notion

So the sentence literally breaks down as:

I + not + am familiar with + [direct object marker] + the concept

מכירה is the present tense feminine singular form of the verb להכיר.

Since Hebrew present-tense verbs agree with the subject in gender and number, a female speaker says:

• אני מכירה — I know / I am familiar with

A male speaker would say:

• אני מכיר

So this sentence tells you that the speaker is female.

A man would say:

אני לא מכיר את המושג.

The only change is:

• מכירה → מכיר

Everything else stays the same.

Great question. את is not translated directly into English. It marks a definite direct object.

In this sentence, the object is המושג — the concept, which is definite because it has ה־ (the).

So Hebrew uses:

• אני לא מכירה את המושג

But if the object were indefinite, Hebrew would not use את:

• אני לא מכירה מושג כזה — I don’t know such a concept / I’m not familiar with such a term

So a simple rule is:

• use את before a specific/definite object
• do not use את before an indefinite object

The prefix ה־ is the Hebrew definite article, meaning the.

So:

• מושג — concept / term
• המושג — the concept / the term

Because the noun is definite, Hebrew also adds את before it:

• את המושג

מכירה comes from the verb להכיר.

Its root is usually identified as כ־י/ו־ר.

This verb often means:

• to know
• to be familiar with
• to recognize
• to get to know
  depending on context

In this sentence, it means to be familiar with / to know in the sense of knowing a concept or term.

This is one of the most common Hebrew learner questions.

Very roughly:

• לדעת = to know a fact, piece of information, or how to do something
• להכיר = to be familiar with, to know a person/place/thing through acquaintance or recognition

Examples:

• אני יודעת את התשובה — I know the answer
• אני מכירה את האיש הזה — I know this man / I am familiar with this man
• אני מכירה את המושג הזה — I know this concept / I’m familiar with this term

In your sentence, להכיר sounds natural because the idea is familiarity with a concept or term.

A simple pronunciation guide:

ani lo makirá et hamuság

Approximate notes:

• אני — ah-NEE
• לא — loh
• מכירה — mah-kee-RAH
• את — often pronounced et
• המושג — ha-moo-SAG

The main stress is typically on the last syllable of מכירה and מושג.

In this sentence, yes, it is quite similar:

• אני — subject
• לא מכירה — negated verb
• את המושג — object

So the order is basically:

I / not know / the concept

This is a very normal Hebrew sentence pattern.

Usually, yes, if the context already makes the subject clear.

Hebrew often drops subject pronouns because the verb form already gives information about the speaker.

So you may hear:

• לא מכירה את המושג.

This still clearly sounds like I don’t know / I’m not familiar with the concept, said by a female speaker.

However, including אני is also completely natural, especially for clarity or emphasis.

In ordinary negative statements like this, yes:

• אני לא מכירה
• הוא לא יודע
• הם לא באים

So לא normally goes before the verb or verb phrase.

In your sentence:

• אני לא מכירה את המושג

that is the standard way to negate it.

מושג can mean several related things, depending on context:

• concept
• term
• notion
• idea

So this sentence could be understood as:

• I’m not familiar with the concept
• I don’t know the term

The exact English translation depends on the surrounding context.

It is neutral and natural Hebrew.

You could say it in everyday conversation, in class, or in writing.

Depending on context, speakers might also expand it a little:

• אני לא מכירה את המושג הזה. — I’m not familiar with this concept/term.
• אני לא ממש מכירה את המושג. — I’m not really familiar with the concept.

But the original sentence by itself is perfectly normal.

Yes, in some contexts it can.

Because להכיר can overlap with both be familiar with and recognize, the sentence may imply:

• I’m not familiar with that concept/term
• I don’t recognize that term

Usually, context decides which English wording fits best.