あなたはドイツ語が話せます。

あなたはどいつ語が話せます。

You can speak German.

あなたはドイツ語(ご)が話(はな)せます。

Anata wa Doitsugo ga hanasemasu.

貴方 (あなた)

you (referring to someone of equal or lower status); dear (what a wife calls a husband)

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

ドイツ語 (ドイツご)

German (language)

が (が)

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

話せる (はなせる)

to be able to speak; to be able to talk; to be understanding; to be sensible

Readings: ゴ、かた.る、かた.らう

Meanings: word, speech, language

Readings: ワ、はな.す、はなし

Meanings: tale, talk