新概念英语第一册第125 126课Ann aZ.ppt

My brother was very ill, so I had to call the doctor in the middle of the night.　 我弟弟病得很厉害,我只得半夜里把医生请来。(客观上需要做这件事) He said that they must work hard. 他说他们必须努力工作。(主观上要做这件事) He had to look after his sister yesterday. have to有人称、数、时态的变化,而must只有一种形式。但must 可用于间接引语中表示过去的必要或义务。 You don’t have to tell him about it.　 你不一定要把此事告诉他。 You mustn’t tell him about it.　　　　你一定不要把这件事告诉他。 在否定结构中:don’t have to 表示 “不必”, mustn’t 表示“禁止”。 小结have to和must 两词都是 “必须”的意思, have to 表示客观的需要, must 表示说话人主观上的看法, 既主观上的必要。 1. 造句:用must 和 have to各造三个句子. 2. 完成课练L125L126. 3. 准备(听写) and (背诵) of L125 4. 预习 127 Homework homework See you next week!! I water my flower every day. * adj.可怕的；危害极大的 His painting is terrible . * terribly adv. 非常 * dry adj. 干燥的，干的 The summer continued hot and dry. * wet湿的 * 油漆未干 * nuisance n. 讨厌的东西或人 * He means to get out from the jail. Nodding means “No ” * 吃惊的表情 in surprise 惊奇地 to ones surprise 使某人感到吃惊的是 * to ones surprise 使某人感到吃惊的是 To my surprise , he is a thief. * 吃惊的表情 * cant you.....表示说话人强烈的希望别人做某事。 Can’t you do it yourself? * 浇水 water terribly 非常 干的 dry nuisance 讨厌的东西或人 意味着；意思是 mean 惊奇，意外的事 surprise 1.Cant you come in and have tea now, Peter? Can’t you do it yourself? 你就不能来帮帮我吗？ every day Grammars She has to leave early. She must leave early. Does she have to leave early? Must she leave early? She doesn’t need to/ have to leave early. She needn’t leave early. 陈述句 疑问句 否定句 have to 与must 1. must 表示主观的认为有必要，有义务 have to 表示含有客观的环境方面的需要， 除了“必须”之外，还有“不得不”。 2. must 没有时态和人称的变化 I must ,he must have to 有时态和人称的变化 I have to, he has to eg. I must work hard. 我必须努力工作。 (我觉得有必要这么做。) I had to go home by ship last night. 我昨晚不得不乘船回家。 (有可能没有赶上其他的航班或者火车，没选择才坐船。) Grammars Grammars ? Must I arrive on time? -Yes, you must. -No, you neednt. Do I have to arrive on time? -Yes, you have to. -No, you dont