I have to
I have to set an example.
Eu tenho de escrever uma dissertação.
I have to write a dissertation.
I have to do laundry today.
Eu tenho de passar a minha camisa.
I need to iron my shirt.
Eu tenho de comprar presentes de Natal.
I have to buy Christmas presents.
I have to get him out of here.
I have to find another one.
Eu tenho de voltar para Boston.
I have to go back to Boston.
I have to go alone.
I have to obey.