概念英语青少版2Bunit21.ppt

《概念英语青少版2Bunit21.ppt》由会员分享，可在线阅读，更多相关《概念英语青少版2Bunit21.ppt（62页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Unit 21,The weather forecast,Teaching contents,Warming up,W,a,r,m,i,n,g,-,u,p,1.Greetings: Hello, boys and girls! Nice to see you again.,2. Learn a song. T: Whats the weather like today?,revision,Revision,规则动词过去式的构成。 1）变化规则： 动词变化很好记，一般末尾加-ed; 如果词尾有个e，紧跟其后加个-d； 辅音加y来结尾，变y为i加-ed； 单元+单辅，双写辅音加-ed 注：特殊变化

2、要熟记。,2）读音规则： 清后t，元浊d，t,d后读id,Revision,过去时的句子变化口诀： 过去时，时过去。 过去时态是否是，过去时间是标志。 否定句很简单，did 之后not添。 疑问句也不难，did置于主语前。 过去置于动词前，谓语动词需还原。,New lesson,What is she talking about?,Listen!,The weather forecast,snowy,cloudy,sunny,rainy,forecast,v.预测，预报,f:k:st,forecaster,n.预报员,announcer,n.播音员，节目主持人,nauns,go over to

3、 转到,the next few,接下来的几个,在接下来的几天天气将要变化。,The weather will change in the next few days.,wind,n.风,wind,blow,v.吹,Shes blowing the dandelion.,blu,south west sauwest n.西南,N,S,W,E,west,north,east,south,From today , the wind will blow from the south west.,从今天起，风将会从西南部吹过来。,From tomorrow , the wind will blow f

4、rom the south east.,从明天起，风将会从东南部吹过来。,bring in 带来,air n.天空, 大气,rain rein n.雨,The wind will bring in warm air from the Atlantic.,风将从大西洋带来暖空气。,bring in,v.带来,Atlantic,n.大西洋,The wind will bring in wet air from Australia.,风将从澳大利亚带来潮湿的空气。,gradually grdjladv.逐渐地,Rain will come in gradually from the south we

5、st this evening.,今天晚上，雨将会从西南方逐渐来临。,The rain is gradually heavy.,雨逐渐地大起来了。,n.阵雨,rain shower,The whole country will have some rain showers in the next three days.,在接下来的三天，全国将会有一些阵雨。,This city will have lots of rain showers in the next three months.,在接下来的三个月，这个城市将会有大量阵雨。,thermometer,n. 温度计,mmit,tempera

6、ture,n. 温度,temprit,degrees Celsius 摄氏度diri:z selsis,rise 上升,fall f:l v.降落, 落下,Temperature will rise to 12 degrees Celsius in the day.,白天气温将会上升到12摄氏度。,Night temperature will fall to 4 degrees Celsius.,夜间气温将会下降至4摄氏度。,autluk,n.前景，展望,the outlook for,对于的前景,outlook,Listen to the recording, and then answer

7、 this question: What will the weather be like next week? 听录音，然后回答问题：下周天气会怎么样？,Picture 1,And now its five to nine, and time for the weather forecast. Lets go over to Carla Dane at the London Weather Center. Carla.,Announcer:,Picture 2,Thanks John, and good morning! Last month was unusually cold and d

8、ry. But all that will change in the next few days.,Weather forecaster:,Picture 3,From today, the wind will blow from the south west. It will bring in warm air from the Atlantic. And well have some rain.,Weather forecaster:,Picture 4,Rain will come in gradually from the south west this evening. The w

9、hole country will have some rain showers in the next three days. some of them will be heavy.,Weather forecaster:,Picture 5,Temperatures will rise to 12 degrees Celsius in the day. Night temperatures will fall to 4 degrees Celsius. It will feel cold over the hills.,Weather forecaster:,Picture 6,And t

10、he outlook for next weekend: the three ws warm, wet and windy. And thats your weather forecast. Back to John at the studio.,Weather forecaster:,Lets practice：,Guided Conversation. 对话练习。P45,LESSON 42,Pronunciation 语音,Weak forms: prepositions. 英语中的介词常弱读，特别是最常见的介词of, for , from和at。 当它们弱读时，或在短语的开头或者中间时，

11、元音通常（但非一定）弱读为短元音 /。,move mu:vvt. 搬动,yet jetadv.还, 尚, 仍然,last l:stadv.最近一次的，延续; 继续；,train treinn.列车, 火车；,will 引导的一般将来时:表示将来发生的动作或存在的状态，最基本的结构：will + 动词原形 肯定句： 主语+ will +动词原形+（宾语）+其他 Some day people will go to the moon . 否定句： 在will 的后面加not即可。will not 可缩写为 wont They wont use books . 一般疑问句： 把will 提到句子主语

12、之前，结尾变问号。 Will students go to school in the future ? 特殊疑问句： 特殊疑问词+will +主语+动词原形+其他？ What will your dream school have ?,“There be”句型的一般将来时 肯定句： There will be +名词+其他成份 注意：无论后面加单数名词或复数形式，be都必须用原形。 There will be only one country. 否定句： 在will后面加not. There wont be only one country. 一般疑问句： 把will提到there之前。 W

13、ill there be only one country? Yes, there will. / No, there wont.,注意：在口语中，所有人称都可以用will.,一般将来时的主要用法：,1、表示将来某一时刻的动作或状态： We will come to see you the day after tomorrow. There will be a wonderful show next week. 2、表示将来某一段时间内经常的动作或状态： The students will come and work in the lab once a week. We will come a

14、nd work in this factory every year.,今天晚上我将会打电话给你。 将来，学生将会使用电脑学习。 我们今天下午没有空。 她不会听我的.,I will call you this evening.,Students will use computers to learn in the future,We wont be free this afternoon.,She will not listen to me.,当天气变冷的时候，鸟类不会飞去南边 我想下个夏天北京的天气将会非常热。 他将会使用他的笔 将会有大雨和大风天气。,The birds wont fly

15、away to the south when the weather turns cold.,I think it will be very hot in Beijing next summer.,He will use his pen,Will there be heavy rain and strong winds?,will句式总结:,Functional Practise：,.hope that you a good time this evening. A.have B.are having C.will have D.has 2.Look at those big black cl

16、ouds. It rain.Lets hurry. A.must B.will C.would D.is going to,注意：will与be going to的区别，be going to可以表示明显将要发生的情况,3.There a basketball match this afternoon. A.will have B.will be C.has D.have 4. We to the park if it is fine tomorrow. A.will go B.go C.goes D. to go,C,D,B,A,S u m m a r y,Homework,Copy the new words and dictate them. Make sentences with the key sentences. Listen to the text for ten minutes everyday. Recite the text.,Thats all.,