Worksheets: should have (done)
Six crime cases. Student's take it in turns to read out their case. The group must decide on sentences for each case in turn. Can also be used to practice criticism, should have etc.
Ss take it in turn to read situations. Others respond with a third conditional sentence - 'If you hadn't.... or criticism - should have etc.
Cut up story. Reassemble and make sentences expressing regret and past conditionals
Language analysis and practice sheet comparing should / shouldn't have, needn't have and didn't need to.