Повествовательные:

She is a doctor.The weather is nice today.They are going to the movies later.The cat is sleeping on the couch.It was a long day at work.You are my best friend.The book is on the table.The children are at school.

Вопросительные:

Is she at home?Are you coming to the party?Is it going to rain tomorrow?Are they ready to leave?Was he at the meeting?Is this the right way?Are we there yet?Is the store open?

Отрицательные:

She is not at work today.The food is not ready yet.They are not coming to the concert.It is not a good idea.You are not listening to me.The house was not clean when we arrived.The train is not arriving on time.I am not feeling well today.