Modals in the Past: Should Have, Could Have

Regrets and missed chances.

Examples

• I should have called.

Key rules

• Should have + participle: criticism or regret
• Could have: past possibility not used
• Might have: possibility
• Would have: unreal past result
• Shouldn't have = it was wrong to do

Common mistakes

• You should went → You should have gone
• I could went → I could have gone