Na sexta-feira, eu vou ao mercado depois do trabalho.

On Friday, I am going to the market after work.

Breakdown of Na sexta-feira, eu vou ao mercado depois do trabalho.

• eu: I
• ao: to the
• ir: to go
• o mercado: the market

Questions & Answers about Na sexta-feira, eu vou ao mercado depois do trabalho.

Why is it na sexta-feira?

Na is a contraction of em + a, and it means on the here.

• em = in/on/at
• a = the feminine singular article

Because sexta-feira is feminine, em a sexta-feira becomes na sexta-feira.

So:

• na sexta-feira = on Friday

This is the normal way to say on Friday in Portuguese.

Why is sexta-feira feminine?

It is feminine because the core noun is feira, which is a feminine noun.

The weekday names from Monday to Friday are built with an ordinal-like word plus feira:

• segunda-feira
• terça-feira
• quarta-feira
• quinta-feira
• sexta-feira

Since feira is feminine, you get:

• a sexta-feira
• na sexta-feira

Why is there a hyphen in sexta-feira?

Because weekday names like segunda-feira through sexta-feira are normally written with a hyphen in Portuguese.

So the correct spelling is:

• sexta-feira

not:

• sexta feira

Why does mean a future action here?