feliz

I hope you are happy.

'Espero' means 'I hope', 'que' is a conjunction that means 'that', 'seas' is the present subjunctive form of 'to be'.

You have a happy day!

'Tienes' is the singular form of 'you have', 'un' is an indefinite article which means 'a' and 'día' is Spanish for 'day'.

I am very happy today.

Here, 'Estoy' is the first person singular form of the verb 'to be'. The word 'muy' is the Spanish word for 'very' and 'feliz' is the Spanish word for 'happy'.

Happy Birthday.

The phrase 'Feliz cumpleaños' literally translates to 'Happy Birthday'. 'Cumpleaños' is the Spanish word for 'birthday'.

I am happy when I read books.

In this phrase, 'Soy' is the first person singular form of the verb 'to be'. 'Cuando' means 'when', 'leo libros' stands for 'I read books'.

She is so happy.

'Ella' is Spanish for 'she', 'es' is the third person singular form of the verb 'to be', and 'tan' means 'so'.

We are happy.

'Nosotros' means 'we', 'somos' is the first person plural form of the verb 'to be', and 'felices' is the plural form of 'feliz' or happy.

The boy is happy playing.

'El niño' refers to 'The boy', 'está' is the third person singular form of the verb 'to be', and 'jugando' is the gerund form of 'playing'.

Are you happy?

'¿Estás' is the second person singular form of the verb 'to be' used when asking a question. The '¿' symbol at the beginning of the question is a Spanish writing convention.

I'll be happy to help.

'Estaré' is the future tense form of 'I will be', 'de' is a preposition that stands for 'to', and 'ayudar' is the infinitive of 'to help'.