七中外研版必修 module Grammar.ppt

Study the example: Ann: Hello, Tom. Did you enjoy the film? Tom: Yes, it was great. You should go and see it. 1)--- 应该 The government should do something about the economy. --- “Should we invite Sue to the party?” --- “Yes, I think we should.” 2). 表推测，译“按理说” --- Do you think you’ll be late home tonight? --- I don’t think so. I should be home at the usual time. She is studying very hard, so she should pass her examination. This photo should be developed tomorrow. 3). 用于suggest / advise / order /desire 等动词后的从句中 They insisted that we should have dinner with them. She demanded that I should apologize to her. His suggestion is that we should go out. I didn’t tell you about that, but how should you know it. You can’t imagine that a well-behaved man should be so rude to a woman. 5). If … should… 如果，万一 If you should see Tom this evening, could you tell him to phone me? =( If you see Tom this evening, can you tell him to phone me? ) = Should you see Tom this evening, could you tell him to phone me? 如果相机坏了，我们出钱为您维修。 If this camera should break down, we would repair it at our expense. Should this camera break down, we would repair it at our expense. must 用法 1) must 表推测，“一定” can用于疑问、否定句表推测 may/ might 表推测，一般不用于疑问句。 瞧！有人来了。可能是谁呢？ ----Look! Someone is coming. Who can it be? 可能是Green 先生。 ----It may/might be Mr. Green. 不可能是他，一定是Black 先生。 ----No, it can’t be him. It must be Mr. Black. 可能不是Black先生，我拿不准。 ----It may not be Mr. Black. I am not sure. 2). Must 表“必须”： Must you go there right now? Yes, I must. No, I needn’t. (=No, I don’t have to.) mustn’t 表“不许可、禁止” Tom, you ______ leave all your clothes on the floor like this! You mustn’t smoke in the hospital. 3). Must 表“坚持要”, “偏要”： If you must leave, tell me and I will let you go. ---- Can I take off my coat? ---- If you must, you can. The machine must break down at this busy hour. As I was sitting down, the electric bell must rin