What's the difference between "spreche" and "sprichst"?

Question

Answer

Maybe 1rst and 2d personn of singular.
Ich spreche, du sprichst...aber bin ich nicht sicher

Answer

Ja, du hast Recht Séverine.
Ich spreche = Eu falo
Du sprichst = Você fala
Hier ist eine Seite, die Ihnen helfen soll:

http://pt.wiktionary.org/wiki/sprechen

Viel Glück beim Lernen!!

Answer

It's the grammatical conjugation of the verb "sprechen". In German we have 3 different personas, once in plural and once in singular, so in total 6. (That are sg: "Ich" - "I", "Du" - you, "er/sie/es" - he/she/it; pl: "wir" - we, "ihr" - you, "sie" - they)
I guess (or hope) this isn't something new for you. As said before, "spreche" is the conjugation for "Ich" and "sprichst" is the conjugation for "du". Just that you see the difference, the total conjugation row of "sprechen:

Infinitive: sprechen
Ich spreche.
Du sprichst.
Er/sie/es spricht.
----
Wir sprechen.
Ihr sprecht.
Sie sprechen.

Well then, a bit detailed explanation now, but if it helps.

Answer

Ich spreche 
Du sprichst  
es/er/sie spricht 
ihr spricht 
wir/sie sprechen 
Sie sprechen

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