Η καλή επαφή με τη δασκάλα μου με βοηθάει όταν νιώθω άγχος.

Not literally in the physical sense of contact. In this sentence, η καλή επαφή means something like:

• a good relationship
• good communication
• being on good terms

So Η καλή επαφή με τη δασκάλα μου is best understood as my good relationship with my teacher or good communication with my teacher.

Greek often uses επαφή in a broader sense than English contact.

Because επαφή is:

• feminine
• singular
• nominative (it is the subject of the sentence)

So both the article and adjective must match it:

• η = feminine singular nominative the
• καλή = feminine singular nominative of καλός = good
• επαφή = feminine singular noun

So:

• η καλή επαφή = the good relationship/contact

Because the preposition με meaning with takes the accusative case.

So:

• η δασκάλα = the teacher (nominative)
• τη δασκάλα = the teacher (accusative)

That is why you get:

• με τη δασκάλα μου = with my teacher

Both exist, but in modern Greek the final -ν of την is often dropped before many consonants.

So you may see:

• τη δασκάλα
• την δασκάλα

Both are understandable, and τη δασκάλα is very common.

Because μου here is the weak possessive form meaning my, and in Greek it usually comes after the noun.

So:

• η δασκάλα μου = my teacher
• literally: the teacher my

This is normal Greek word order for possessives with these short pronoun forms.

They are two different words with different jobs:

1. με in με τη δασκάλα μου = with

   • this is a preposition

2. με in με βοηθάει = me

   • this is a weak object pronoun

So:

• με τη δασκάλα μου = with my teacher
• με βοηθάει = helps me

They look the same, but they do different things.

Because weak object pronouns in Greek usually come before the verb.

So:

• με βοηθάει = it helps me

This is the normal Greek pattern:

• με βλέπει = he/she sees me
• με ξέρει = he/she knows me
• με βοηθάει = he/she/it helps me

In this sentence, the thing doing the helping is Η καλή επαφή με τη δασκάλα μου.

Yes. Both βοηθάει and βοηθά are acceptable modern Greek forms.

This verb belongs to a group where two present-tense forms are common:

• βοηθάει
• βοηθά

So the sentence could also be:

• Η καλή επαφή με τη δασκάλα μου με βοηθά όταν νιώθω άγχος.

Both mean the same thing.

Because Greek usually does not need subject pronouns when the verb ending already shows the subject.

• νιώθω = I feel

The ending -ω already tells you it is I.

So Greek normally says:

• νιώθω άγχος = I feel stress/anxiety

Adding εγώ is possible, but it is usually for emphasis:

• εγώ νιώθω άγχος = I am the one who feels anxious / I feel anxious

It means:

• when I feel anxiety
• more natural English: when I feel anxious
• or when I’m stressed

Greek often says νιώθω άγχος literally I feel anxiety/stress, where English might prefer I feel anxious.

So:

• άγχος = anxiety, stress
• νιώθω άγχος = I feel anxious / I feel stress

Greek can express this idea in more than one way.

This sentence uses the noun:

• νιώθω άγχος = I feel anxiety / I feel stressed

Another possible expression is with an adjective:

• είμαι αγχωμένος if a male is speaking
• είμαι αγχωμένη if a female is speaking

That would mean:

• I am stressed / anxious

So the original sentence is perfectly natural; it just uses the noun άγχος instead of an adjective.

Because όταν means when, and here it describes something that happens generally or repeatedly.

So the meaning is:

• It helps me whenever I feel anxious
• It helps me when I feel anxious

Greek commonly uses the present tense after όταν in this kind of sentence.

The subject is the whole noun phrase:

• Η καλή επαφή με τη δασκάλα μου

That whole phrase is what helps me.

So the structure is:

• Subject: Η καλή επαφή με τη δασκάλα μου
• Object pronoun: με
• Verb: βοηθάει
• Time clause: όταν νιώθω άγχος

You can do a rough word-for-word version:

• Η = the
• καλή = good
• επαφή = contact/relationship
• με = with
• τη δασκάλα μου = my teacher
• με = me
• βοηθάει = helps
• όταν = when
• νιώθω = I feel
• άγχος = anxiety/stress

So a literal version is:

• The good contact with my teacher helps me when I feel anxiety.

But a more natural English translation would be:

• My good relationship with my teacher helps me when I feel anxious.

Yes. δασκάλα is a female teacher.

The masculine form is:

• δάσκαλος = male teacher

So τη δασκάλα μου clearly means:

• my teacher referring to a woman

Yes, Greek word order is more flexible than English, though not completely free.

The original sentence is natural:

• Η καλή επαφή με τη δασκάλα μου με βοηθάει όταν νιώθω άγχος.

You could move parts around for emphasis, for example:

• Όταν νιώθω άγχος, η καλή επαφή με τη δασκάλα μου με βοηθάει.

That means the same thing, but puts emphasis first on when I feel anxious.

Because adjectives in Greek must agree with the noun they describe.

Here the noun is επαφή, which is feminine singular, so the adjective must also be feminine singular:

• καλός = masculine
• καλή = feminine
• καλό = neuter

Since επαφή is feminine:

• η καλή επαφή

Yes, but learners should know it is a bit broader than English contact.

Depending on context, επαφή can mean:

• contact
• communication
• connection
• relationship

So in this sentence it sounds natural in Greek, even though English might choose relationship or communication instead of contact.