A multiple-choice exercise to practise modals of obligation: must / mustn’t, have to / don’t have to Grammar Rules: Must vs Have to
Modal Verbs of Obligation HAVE TO, MUST & SHOULD are modal verbs which we use for obligation and recommendations. Use SHOULD to make a recommendation (i.e. when you think it is a good idea for someone to do something). Example: You should do some grammar exercises to improve your English. 2. You should drink 6 glasses of water a day. … Read More
How many helping verbs or modal verbs can you find?