No hables tan deprisa, que no te entiendo.

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Breakdown of No hables tan deprisa, que no te entiendo.

• tan: so
• te: you
• entender: to understand

Questions & Answers about No hables tan deprisa, que no te entiendo.

Why is it hables and not hablas?

Because this is a negative command: No hables... = Don't speak...

In Spanish, negative commands for tú use the present subjunctive, not the normal present tense.

• hablas = you speak / you are speaking
• hables = the form used in No hables = don't speak

So:

• Hablas muy deprisa. = You speak very fast.
• No hables tan deprisa. = Don't speak so fast.

Is No hables a command or a statement?

It is a command/request, not a statement.

A statement with tú would be:

• No hablas = You don't speak

But here we have:

• No hables = Don't speak

That difference is very important in Spanish:

• hablas = indicative, normal statement
• hables = subjunctive form used in a negative command

What does tan mean here, and why not muy?