should should /ʃʊd/

verb

1. Expresses an emotional, practical, or other reason for doing something  ( had better , should )
   expresses an emotional, practical, or other reason for doing something
    You had better put on warm clothes
   You had better put on warm clothes
    The State ought to repair the bridges
   The State ought to repair the bridges
    You should call your mother-in-law
   You should call your mother-in-law
   
2. Expresses that something is likely  ( should )
   expresses that something is likely
    That ought to be enough
   that ought to be enough
    They should be finished by now
   they should be finished by now
   
3. Expresses a condition  ( should )
   expresses a condition
    If I should die, look after my children
   if I should die, look after my children