Je peux te pardonner cette erreur si tu me dis la vérité tout de suite.

Here, peux is the je form of pouvoir in the present tense.

In this sentence, it most naturally means can or am able to. Depending on context, it can also suggest I’m willing to. So Je peux te pardonner... is not just about physical ability; it can also mean I can forgive you / I’m prepared to forgive you.

Because te goes with pardonner, not with peux.

In French, when you have a conjugated verb plus an infinitive, object pronouns usually go before the infinitive they belong to:

• Je peux te pardonner
• Je veux le voir
• Nous allons vous aider

So te is placed before pardonner, which is the action of forgiving.

Te is the object pronoun for you.

With pardonner, French commonly uses the pattern:

• pardonner quelque chose à quelqu’un
  = to forgive someone for something

So in this sentence:

• cette erreur = the thing being forgiven
• te = the person being forgiven

You can think of te as standing for à toi.

Because French and English structure this idea differently.

English often says:

• forgive someone for something

French usually says:

• pardonner quelque chose à quelqu’un

So:

• Je peux te pardonner cette erreur

is the natural French structure. A direct word-for-word translation from English with pour would usually sound unnatural here.

Because erreur is a feminine singular noun.

The singular demonstrative adjectives are:

• ce for masculine singular
• cet for masculine singular before a vowel sound
• cette for feminine singular

Since erreur is feminine, French uses cette:

• cette erreur

Cette means this, so it points to a specific mistake.

That suggests the speaker has a particular error in mind, probably one both people already know about.

Compare:

• une erreur = an error, any error
• cette erreur = this error, this specific mistake

Because me is the normal object pronoun form of to me.

French strongly prefers object pronouns before the verb:

• tu me dis
• il te parle
• nous lui répondons

Using à moi is possible, but usually only for emphasis:

• Tu me dis la vérité = neutral, normal
• Tu dis la vérité à moi = not natural in standard French
• Tu me dis la vérité, à moi = emphatic, marked

So me is the standard form here.

Because French often uses an article where English might not.

Dire la vérité is the normal expression for to tell the truth.

So:

• dire la vérité = to tell the truth
• dire un mensonge = to tell a lie

The definite article is simply part of the usual French phrasing here.

Because French uses the present tense after si for a real or possible condition in the present or future.

So:

• si tu me dis la vérité = if you tell me the truth

This is a very common pattern:

• Si tu viens, je suis content.
• Si tu veux, on part maintenant.

French does not use the future tense directly after si in this kind of sentence. So si tu me diras would be wrong here.

Using Je peux makes the statement feel immediate: I can forgive you now / I am able or willing to forgive you now, provided you tell the truth right away.

If the speaker wanted to sound more clearly future-oriented, they could say:

• Je pourrai te pardonner cette erreur si tu me dis la vérité tout de suite.

That would mean I will be able to forgive you...

So both can work, but Je peux makes the possibility feel more immediate and present.

Tout de suite means right away, immediately, or at once.

It adds urgency. The speaker is not just asking for the truth, but for it now, without delay.

It is a very common everyday French expression.

Yes. If the speaker is addressing more than one person, or one person formally, French would use vous instead of tu.

That gives:

• Je peux vous pardonner cette erreur si vous me dites la vérité tout de suite.

The changes are:

• te → vous
• tu → vous
• dis → dites

Yes: it is very standard French word order.

It breaks down like this:

• si = if
• tu = you
• me = to me
• dis = say / tell
• la vérité = the truth
• tout de suite = right away

French usually puts short object pronouns like me, te, le, la, lui, nous, vous before the conjugated verb:

• tu me dis
• elle te voit
• nous vous aidons

So the order here is exactly what a learner should expect.

It can be used with both, but the structure matters.

Common patterns include:

• pardonner quelque chose à quelqu’un
• pardonner à quelqu’un
• pardonner quelqu’un is much less common in modern everyday French than the first pattern

In this sentence, French is using the very common pattern:

• te = the person
• cette erreur = the thing being forgiven

So the sentence is built in a very natural way.