Hi Ahmed, Must relates to something that is important for you to do, eg. "I must clean the house" Should is something that you intend to do in the near future "I should clean the house but I don't have time today" Have is very similar to must, but can be used with possessions ed. "I have a house" Hope that helps :-)

I would say that "should" doesn't necessarily have to do with intention. Should - It is recommended that you do this, but it's not absolutely necessary: "You should eat plenty of fruits and vegetables." "You should avoid Central Park after dark."