You don't have to wear a tie in the office it's your decision ( The teachers can choose if they want to wear a tie or not) Subject + don't/ doesn't have to + bare infinitive + object With ‘ don't have to ' we are talking about the fact that there is no obligation to something because often there is a choice. People mustn't smoke near gas ( It is very dangerous so do not smoke here, it's your responsibility ) You mustn't wear shoes in my house ( You have a strong responsibility not to wear shoes here) Subject + must not + bare infinitive + object We are describing a strong obligation not to do something. The negative forms of ‘ must ' and ‘ have to ' are not direct opposites of the positive forms. They have to pay to use the bicycles ( You cannot just take the bikes, there are rules about paying from the company that has the bikes) She has to wear a uniform at work ( Wearing a uniform at work is a strong rule at this workplace) Subject + have/ has to + bare infinitive + object People must feed their children properly ( Parents have a responsibility to feed their children) He must do more homework to do better in class ( To improve, this student has a responsibility to himself to do more homework) Subject + must + bare infinitive + object ‘ Have to ' is used to when the obligation comes from the outside of the speaker. Sometimes the difference in meaning is not always clear but a rule to follow is that ‘ must ' refers to personal obligation, the speaker has decided that this situation is important to them or it is very necessary. Remember that this is only one section of modal verbs you should take a look at the main modal verbs section if you do not find what you are looking for here or if you need a review activity.When we want to discuss obligation, that is things that are necessary or important, in the present we use ‘ must ' and/ or ‘ have to '. You can also edit worksheets to better suit your students. Since all the worksheets on Busy Teacher are free and easy to download, be sure to look at several before selecting one. Talking about illnesses is a perfect opportunity to practice giving advice and using modal verbs so even if you do not use this worksheet, you might still want to combine these topics during your lessons. There are three sets of cards and instructions for three different games but you may decided just to play one game or use the first set of cards to make flashcards for introducing different vocabulary words. Using the materials found here, you can combine giving advice using should and ought to with health and body related topics.
There are currently 107 activities for teaching and practicing should and ought to. This is the final section of modal verbs.
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