Modal Verbs (should/must/have to/can/could/may/might)

We use Modal and Semi-Modals to add meaning to the verb. 1) Match the verbs to their meaning. can / could ability can / may permission may / might possibility have to necessity should advice, recommendation mustn't prohibition must obligation 2) Complete the tips below with a suitable modal. HOW TO PREVENT COMPUTER VISION SYNDROME1. Take breaks from the computer. You should rest your eyes every 20 minutes for 20 seconds. Do this by looking away from the computer screen.2. Change the settings of your screen. You shouldn't use a small font size because it makes your eyes very tired. The center of the screen must be 10-15 cm below your eye level. For the best results, the screen must be 33 cm from your eyes.3. Check the lighting around the computer. Bright light is bad for your eyes, so there mustn't be any bright sunlight shining onto your screen. It will reflect off the screen into your eyes. This can cause computer vision syndrome. 3) Choose the right modal verb.1. Jackie learned first aid, so she ... ... ... help people. can mustn't ought to 2. The children ... ... ... play with fire. mustn't must can 3. "Mom, ... ... ... I please go on the camping trip? It will be a great experience!" should ought to can 4. We ... ... ... go to London if we get a good deal. may / can must / should shouldn't / can 5. I don't know which direction to go in. I ... ... ... ask someone to help. mustn't have to might 6. That dress doesn't suit you. You ... ... ... try on a different one. should can could 7. It ... ... ... rain later, so bring an umbrella. should could might 8. "Yes, you ... ... ... go to Alison's party. Please be home by 11:30." ought to must can 9. Jane ... ... ... do amazing things on the computer. can should has to 10. You ... ... ... smoke or you will be arrested. can should mustn't