When to use "ser"

To be

Ser

It could be

Puede ser

It's possible

Es posible

It's likely

Es probable

It's unlikely

Es poco probable

You look dutch

Pareces holandesa

Maybe not

tal vez no

Who knows

Quien sabe

It's a lie

Es mentira

It's not true

No es verdad

What's today?

Que día es hoy/ Que día es

Today is Friday

Hoy es viernes

It is late

Es tarde

It is early

Es temprano

You are late

Llegas tarde

You are early

Llegas temprano

It is at night

Es en la noche

It is in the morning

Es en la mañana

That is to say…/that means…

O sea…

My cousin is a lawyer

Mi primo es abogado

She is blonde

Es rubia

He is not single

No esta soltero

You are not married

No estás casado

She is very tall

Es muy alta

We are married

Estamos casadas

They are my daughters

Son mis hijas

I don't know

No lo se