[其它模板]Grammar.ppt

Choose suitable modal verbs below to complete the following dialogues. ought/oughtn’t to should/ shouldn’t mustn’t needn’t (don’t) have to will can/ can’t 1 Sam: How can I grow thinner, Mum? Mum: Well, you _______ eat food with plenty of fibre that helps you digest better. And you _____ stop drinking cola or eating sweet food. have to should Sam: Does it mean I _________ eat my favourite fried chicken any more? Mum: Not exactly, if you love fried chicken, you ______ give it up. Just eat it less often. You ______________________________ worry too much: a little fried chicken ____ do you good! shouldn’t needn’t don’t have to/ needn’t/ shouldn’t will 2 Doctor: You are sick because you’ve eaten poisonous mushrooms. Where did you get them? Lucy: I picked them in the forest. I know we _______ eat fresh vegetables. Doctor: Oh, but you _______ eat them until you’re sure they are not poisonous. Lucy: Thank you, doctor. I’ll be more careful next time. have to mustn’t * Grammar Find the sentences containing modal verbs in the reading passage. Then usually by lunchtime they would all be sold. What could have happened? Nothing could be better… Something terrible must have happened if … He could not believe his eyes. Perhaps he should go to the library and find out. He had better do some research! Even though her customers might get thin after eating Yong Hui’s food… They would become tired very quickly. Modal verbs a. should, ought to都可表示“应该”。ought to用于表示按道理应当，常指客观的义务或责任，大多数情况下可用should代替，但比should语气重。 I should help her because she is in trouble. You ought to take care of the baby. b. 表示劝告、建议或命令时，should和ought to可通用，但在疑问句中常用should。ought to的否定式为oughtn’t to或ought not to。 You should / ought to go to class right away. Should I open the window? What should we do next? c. should, o