Material recopilado por: Rebeca Fernández Junio 2011

1. Uses Could Tosuggestanalternativeor a possibility Should Togiveadvice Can Forabilityorpossibility

2. Uses Must Forstrongobligation Might/ May Forremotepossibilities. Forrecommendations Haveto Affirmative: Obligation Negative: Lack of obligation

3. Structure Affirmativesentences Subject + Modal Verb + MainVerb in Base Form Negativesentences Subject + Modal Verb in Negative + MainVerb in Base Form Questions Modal Verb + Subject + MainVerb in Base Form

4. Examples Could Theexpress bus is full. Youcouldtakethe local instead. Should Youshouldn`ttakethatflight. Youshouldtakethe non-stop. Can I can speakEnglish, but I can´tspeakItalian.

5. Examples Must Cabincrewmuststaycalmduringanemergency. Might/ May Youmightwanttogowalking in theCarpathianmountains. Haveto Youhavetogotothe doctor ifyoufeelreallysick. Youdon´thaveto show your ID to come in.