![]() He should eat more fruits and vegetables.You must remember to come directly home.Our word choice varies depending on the strength of the obligation or advice. We use the rules for present, positive obligation when expressing something that a person is expected or advised to do. Examples of Modal Verbs in the present tense Modals and Positive Obligation (Present Tense) Second, we need to factor in whether the event takes place in the present or past. First, we need to decide if we want to express a positive or negative obligation. The rules for modal verbs of obligation vary on several factors. To express obligation, we can use have to + infinitive, must + infinitive and should + infinitive. ![]() We use modal verbs of obligation when we want to express a person’s obligation to do something – that is when we want to tell somebody whether they are required or expected to do something. ![]()
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