German has three grammatical gender– a masculine, a feminine and a neuter gender.
That’s the first challenge for any English native speaker who starts out learning German.
Please familiarise yourself with the two forms of the article in German – there is a definite and an indefinite article.

We use the definite article whenever we combine a noun in English with ‘the’.
Example:
the speaker – der Lautsprecher (masculine)
the cup – die Tasse (feminine)
the car – das Auto (neuter)

The indefinite article in German corresponds with ‘a’ and ‘an’ in English.
Example:
a speaker – ein Lautsprecher (masculine)
a cup – eine Tasse (feminine)
a car – ein Auto (neuter)

Both articles have to adjust to the noun that they refer to in gender (masculine, feminine or neuter), grammatical number (singular or plural) and case (nominative, genitive, dative or accusative).