4c Fill in the gaps with the phrases in the box.
• Refer to the text in Ex.2a.
1 Connie....
2 In such a cold night Lewis's clothes ... wet for long.
3 For some reason Lewis ... to hide the truth.
4 Connie ... the hole in the ice, because the moon was so bright.
LOOK
Modal verbs for expressing deduction (about the past)
must have + V(3)
can't have + V(3)
She was not at home — she must have been at work.
It was dark, and the inspector can't have seen the robber.
Modal verbs for expressing possibility (about the past)
might have + V(3)
could have + V(3)
We didn't find the gun. He might have hidden it or thrown it away.
The inspector was not sure who had committed the crime - it could have been any of the suspects.
• Refer to the text in Ex.2a.
1 Connie....
2 In such a cold night Lewis's clothes ... wet for long.
3 For some reason Lewis ... to hide the truth.
4 Connie ... the hole in the ice, because the moon was so bright.
LOOK
Modal verbs for expressing deduction (about the past)
must have + V(3)
can't have + V(3)
She was not at home — she must have been at work.
It was dark, and the inspector can't have seen the robber.
Modal verbs for expressing possibility (about the past)
might have + V(3)
could have + V(3)
We didn't find the gun. He might have hidden it or thrown it away.
The inspector was not sure who had committed the crime - it could have been any of the suspects.