Every modal verb is a bit different and not all of them can be used in all tenses. We use "may" for permission, but we can use "can" and its conditional form "could" as well.
Matches in Transcript
Caption 41 [en]: Parents use "may not" quite often. Caption 41 [en]: Parents use "may not" quite often.
Abi opens her picture dictionary and introduces us to some useful vocabulary pertaining to houses. In particular, she focuses on the outside areas surrounding the house and various tools.
Matches in Transcript
Caption 54 [en]: My parents like it when the grass is green, Caption 54 [en]: My parents like it when the grass is green,
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