5. Modal + Present Perfect Forms and
Functions
Subject Modal Not Have Past
Participle
Complement Function
The bear must have slipped on the ice. Logical Conclusion
The bear must not have read the sign Logical Conclusion
The bear shoul
d
have walked more slowly. Advice
The bear might have slowed down Advice
“I shoul
d
have been more careful.” Regret
Others might have laughed at him Speculation
The sign might not have been visible. Speculation