We use infinitive without to after the modal: True False.
Modal verbs take -s in the third person True False.
We form negatives by adding not after the modal verb, we don't use do: True False.
In question tags and short answers, we repeat the modal verb, we don't use be or do True False.
We can use one modal verb after another True False.
We add -ed to form the past of modal verbs True False.
Match the modal verbs with their uses in present forms Obligation, necessity Prohibition advice, criticism necessity no necessity.
Match must have to.
Match the modal verbs with their uses in past forms Obligation, necessity advice, criticism necessity no necessity.
Comparison between needn't have and didn't need to didn't need to - you don't to sth because it is not necessary needn't have - you don't to sth because it is not necessary.
Comparison between needn't have and didn't need to didn't need to - you do sth but it wasn't necessary needn't have- you do sth but it wasn't necessary.
Match ability no ability permission prohibition.
Match Certainty: negative Possibility Probability Certainty: positive.
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