7/27/2019 Perfect Infinitive with Modal verbs or Modal Perfect.ppt

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Perfect Infinitive with Modal

verbs or Modal Perfect

October, 2012

7/27/2019 Perfect Infinitive with Modal verbs or Modal Perfect.ppt

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Form:

Modal verb + have + past participle

e.g. There is some blood in the

sink. He must have hurt himself in

the garden.

7/27/2019 Perfect Infinitive with Modal verbs or Modal Perfect.ppt

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Use:

- to refer to the past;

- to refer to unreal situations;- to show that the activity was

different from what we wanted.

7/27/2019 Perfect Infinitive with Modal verbs or Modal Perfect.ppt

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> could have done could have done (2) must have done cant have done

7/27/2019 Perfect Infinitive with Modal verbs or Modal Perfect.ppt

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> may/might have done should have done would have done