HomeGrammarMust Be – A DeductionMust Be – A Deduction admin 7 February 2017 Grammar No Comments Must Be – A DeductionWe use the structure “Must be” when we think we know something, but we are not 100% sure – we are making a deduction / assumption about a situation. Follow the expressions; Tweet Pin It Related Posts Some vs Any – Using and Differences 200 Most Important Prepositions Uses of ‘Mr.’, ‘Mrs.’, ‘Miss.’ and ‘Ms.’About The Author admin