Unit 1 Topic 2 Section B课件2023-2024学年仁爱科普版英语九年级上册

Unit 1 The Changing World Section B Topic 2 The population in developing countries is growing faster. By the end of the class, you will be able to 1.Master the following words ,phrases and sentences: Words： population, billion, increase, reach, luckily, policy, Russia, measure Phrases: increase by, developing countries, developed countries, carry out, the one-child policy Sentences：①What a large population! ②The world has a population of 6.8 billion. ③ So it is. 2. Read numbers in English. 3. Talk about population problems. Language goals Revision 1.给某人打电话 2.在家 3.再也不... 4.走失，迷路 5.我也是 6.讨厌做某事 7. 去散步 call sb. up=ring sb up =make a telephone call to sb be in =be at home not... any more =no more get lost =lose one's way So do I. hate doing sth. have/take a walk Revision 1. So + be/情态动词/助动词+主语 （表肯定） （表示上文提到的肯定情况也同样适合另外一个人或物， 前后主语不是同一个人或物） Neither / Nor + be/情态动词/助动词+主语（表否定） 注：neither/nor句型中没有not出现。 （表示上文提到的否定情况也同样适合另外一个人或物） ▲ So +主语+ be/情态动词/助动词 （表示对前面事实的肯定，前后主语是同一个人或物,意思是“的确如此”） 2. already意思是“已经”，通常用于肯定句中 。 yet可用于否定句，“还” ；也可以用于疑问句，译为“已经” just只用于肯定句意思是“刚才” never用于否定句译为“从不” ever用于疑问句译为“曾经” 完成时态常见副词 just never ever already yet before 含义 刚刚 从不 曾经 已经 还（没） 以前 位置 句中 句中 句中 句中/末 句末 句末 句式 肯定句 否定句 一般疑问句 肯定句 否定句/一般疑问句 肯定句 Revision 选用所给单词或词组填空 already, yet, ever, never, have been to, have gone to 1. Tom has _______________finished his homework. Now he is playing football onthe playground. 2 . Have you __________ been to the Great Wall ? 3 . She hasn't come back _______________. 4. I have ____________heard of that before. It is so strange. 5.Has he kept the book _______________? 6.-Have you seen the film?---Yes. I have __________________seen it. 7.__________ you ever _______________Hainan? 8. Mr. Wang isn't here. He ________________Shanghai. just/ already ever yet never yet just/ already been to has gone to Have New words: 1. population n. 人口，人数 2. billion num