青少版新概念介绍1B-unit20--what-a-surprise.pptVIP

Oh dear! I’m sorry, Linda. I must go! Can I call you at half past nine? Mum! I must find my book! Karen: Lucy: Can I call you at half past nine? 我九点半再打给你可以吗？ call 给某人打电话 call sb. 给某人打电话… give sb. a call 给某人打电话 must 必须（情态动词）后接动词原形 must do sth. 用法： 一、表“必须”。 You must talk to them about their study. 你必须同他们谈关于他们学习的事。 二.在否定结构中表不许。 You mustn‘t leave here.你不能离开这儿。 三.表坚定的建议。 You must come and see us as soon as you get To Shanghai.一到上海你得马上来看我们。  四.表推测，暗含有很大的可能性，用在肯定句。 He must be ill. He looks so pale.他肯定是病了。他的脸色那么苍白。 否定形式 mustn’t 一定不要，不能 e.g. You mustnt leave here.你不能离开这儿。 一般疑问句：将must提到句首 Must I clean the classroom now? 我必须现在打扫教室吗？ 肯定回答： Yes, you must. 是的。 否定回答：No, you neednt.不必现在打扫。（No, you dont have to.） Karen: Thanks ,Linda.Bye! Now, Lucy, look in your schoolbag. Lucy: It isnt there. Karen: Are you sure? Lucy: Yes, Mum.Look! Lucy: Oh! Here it is! Karen: What a surprise! Please hurry up, Lucy! Its six oclock. Lucy: Its OK, Mum. Im ready.Can we go now, please? at与具体的时刻连用： at a quarter to，at 7 o’clock on+具体的某一天 on Sunday, on Monday morning in+月份/季节/年份。 in june, in summer, in 2005 根据课文回答下列问题 1. When is Lucy’s music lesson? 2. Is Lucy’s music lesson at a quarter to six? 3. What’s the matter with Lucy? 4. What time is Lucy’s music lesson? 5. What time is it now? 6. Must Lucy find her book? 改错 1. There are any books on the shelf. 2. Her music lesson is in half past six. 3. It’s half to six now. Hurry up. 4. I must finding my book. some at past find 汉译英 我现在很忙。 I’m very busy now. 2.你现在忙吗？ Are you busy now? 3. 我十一点半再打给你好吗？ Can I call you at half past eleven? 用间接法表达下列时间 12:15 12:30 12:45 12:00 half past eleven ten to two five past three eight o’clock Homework 1. lesson39课文1+1 2. 背诵课文 3. 用间接法写出下列时间 9:00 ，9：15， 9:30 ，10：00 8:45， Unit 20 What a surprise! surprise[s?praiz] 名词 n. 1. 惊奇,诧异 2. 使人惊讶的事,意外的事 3. 突然袭击 What a surprise!好一个意外呀！ What a +名词 惯用感叹句，表示吃惊。（What a speed!） What a (cute) baby! What a (cute) dog! 热身活动（复习） 复习时