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[ Ссылка ]. semi Modal verbs,. ought to, used to,able to,had to , need to,. how to use Modal verbs
English semi-modals include need and dare. 'The marginal modal verbs, sometimes called semi-modal verbs, are dare, need, ought to, used to.
auxiliary verbs are so-called because they can function as modal auxiliary verbs as well as main verbs. Semi-modal verbs combine with the preposition to to express about the same things as the main modal verbs. The bare form of the main verb always follows the semi-modal verbs which are had better, ought to, used to, dare, and need. Semi-modal verbs are used with main verbs, but they cannot be used as main verbs by themselves.
Semi-modal verbs do not have simple past tense, present participles, or past participles. They cannot be used to form infinitives with the exception of ought to and used to. Both these verbs are always followed by infinitives. When a semi-modal verb is used with a third-person singular subject, it does not change its form.
Had better
Had better is used to issue warning, give advice, make suggestion, recommend an action that will avoid something bad that is likely to happen, or to say something that should be done or is worth doing in a particular situation. The verb had of had better cannot be changed to have. It is always had. It can be contracted to You’d better . . .
We use had better for the present and future, but not the past. The present continuous tense is not used with had better.
