Grammar: giving advice and making recommendations

The John Rylands Library on Deansgate

We can give advice and make recommendations using different phrases in English. Look at the text below. What phrases can you spot and how are they used?
 

      When you're in Manchester, you really should go to Old Trafford. It's home to one of the most famous football teams in the world. Even if you don't like football, the stadium is well worth a visit. You ought to go while they're playing a match, but tickets can be extortionate and very hard to find. You can get there easily by tram or by bus (number 250). The bus is cheaper so you should try that option first. You shouldn't get a taxi unless there are a few of you because it will cost too much.



      While you're here, you ought to visit some other local sights. You should definitely visit the John Rylands Library on Deansgate because it's very beautiful inside. People study in the library, so you'd better be quiet when you're there. You ought not to go as a large group, because you could make too much noise. 

Inside the Library

We use should and ought to to make recommendations and give advice:
                                                                                                         
should + base form. We use should in positive sentences, negative sentences and questions:

Should we go to Old Trafford?
Yes, you should go to Old Trafford but 
you shouldn't get a taxi unless there are a few of you

We can make should stronger by using really or definitely
You really should go to Old Trafford and you should definitely visit the John Rylands Library.
                                                                                                                                                                   
We can use ought to + base form instead of should. Ought to is a little bit more formal than should. We use  ought to in positive and negative sentences. We don't really use ought to in questions: we use should

You ought to go to Old Trafford while they're playing a match. If you do go to the John Rylands Library, you ought not go as a large group.
                                                                                                                                                                  
What about must ?
We can use must to make our advice stronger:
   It's late and I think you've drunk enough. You should go home now.
   Look at you, you can hardly walk!! You really must go home now. I'll get you a cab.