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About This Resource
This B1–B2 resource develops modal and related forms for ability, permission, and obligation across different times and contexts. It compares core modals with flexible alternatives such as be able to and have to, emphasizing strength, source, register, and grammatical form.
What You’ll Learn
• Use modal verbs to express ability, permission, and obligation.
• Form modal statements, questions, and negatives accurately.
• Use related forms such as be able to and have to when tense or structure requires them.
• Choose forms according to time, strength, source, and register.
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