Giving  advice  

Giving  advice  I have a problem. I weight 100 kilos!! I would like to lose some weight. What can I do?

If I were you, I would go on a diet and you should do more exercise.

Giving  advice  To give advice there are some structures we can use:

If I were you, I would + INFINITIVE

If I were you, I would go on a diet

You should + INFINITIVE

You should do more exercise