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Modal/ Semi-modal by Mind Map: Modal/ Semi-modal

1. Future/ willingness/ promises and offers/ conditional sentences

2. Don't have to/ didn't have to

2.1. Lack of obligation

3. We use modal verbs to modify the meaning of the main verb.

3.1. Can/could

3.1.1. Ability, permission, request, advice

3.2. Will/Shall

3.3. May / might / could

3.3.1. Possibility/ permission

3.4. Would / would have

3.4.1. Requests/ past of will/ conditional sentences/ habits

3.5. Must / Mustn't

3.5.1. Rules/ obligation

3.6. Should /Shouldn't

3.6.1. Recommendation/ advice

3.7. Should have / Shouldn't have

3.7.1. Regret/ criticism

3.8. Needn't (Needn't have

3.8.1. Lack of obligation

3.9. May be / Might be / Must be / Can't + be / + be -ing form

3.9.1. Speculation about the present

3.10. May have / Might have / must have / can't have + past participle / + been -ing form

3.10.1. Speculation about past

3.11. Could have / Couldn't have

3.11.1. Possibility in the past/ critisism

3.12. Will have

3.12.1. Future completion

4. Semi-modal verbs have some of the characteristics of modals, but not all.

4.1. Have to/ had to/ have got to

4.1.1. Rules/ obligation

4.2. Ought to

4.2.1. Obligation/ advise

4.3. Need to

4.3.1. Necessity/ instructions/ guidance

4.4. Don't need to/ didn't need to

4.4.1. Lack of obligation

4.5. Would like/ would like to

4.5.1. Offers/ invitations/preferences

4.6. Be able to

4.6.1. Ability/ infinitive of can