Moje sestra je mladší než já.

My sister is younger than I am.

Breakdown of Moje sestra je mladší než já.

• já: I
• být: to be
• můj: my
• než: than

Questions & Answers about Moje sestra je mladší než já.

What does each word in Moje sestra je mladší než já correspond to in English?

Roughly, word by word:

• Moje – my
• sestra – sister
• je – is
• mladší – younger
• než – than
• já – I / me (here: than I (am))

So the whole sentence means: My sister is younger than I am / My sister is younger than me.

Why is it moje sestra and not můj sestra?

Because sestra (sister) is grammatically feminine, and the possessive můj / moje must agree in gender with the noun it modifies.

• Masculine: můj bratr – my brother
• Feminine: moje sestra – my sister
• Neuter: moje dítě – my child

So:

• můj sestra – incorrect (wrong gender)
• moje sestra – correct

What is the difference between moje sestra and má sestra?

Both can mean my sister in the nominative case and are grammatically correct:

• moje sestra – neutral, very common in everyday speech