UNIT 2 Keeping HealthyTOPIC 1 You should brush your teeth twice a day.Section BCan you guess?Whats the matter with me?have a feverhave a headachehave a stomachacheadvicego to hospitaltake some medicinehave a restLets learn something about our teeth.Whats the matter?I have a cold.You should take some medicine.Whats wrong with Tim?He has a stomachache.He has a fever, too.Oh, no!He needs to go to hospital and see a doctor.Whats the matter, young man?Mmm I have a Stomachache.Oh, you have a fever, too. But dont worry.Its not too bad. You need to take some medicine.You should also drink a lot of water and stay in bed.biting surface outside surfaceinside surfacedental caries龋齿龋齿chocolateinsidesurfacetoothbrushYou should brush your teeth twice a day. Brush the inside surface of your teeth.Brush the outside surface of your teeth. Brush the biting surface of your teeth. Wash your mouth with water.Eat a lot of vegetables and fruit. Dont eat lots of chocolate and sweets. Pair workHow do you brush your teeth?brushbrushFirstNextThenAfter thatLets make a dialogue according to some pictures. have a fever stay in bed for two days I have got a headacheThank you!