Unit 8　It must belong to Carla.Period 2(Section A 3a－3c)课件(共10张PPT)

(共10张PPT)
Unit 8　It must belong to Carla.
Period 2(Section A 3a－3c)
教学目标 1. 能运用情态动词must, could, might和can't进行合理的推断2. 能根据一定的背景或前提进行预测或续写3. 能快速概括文章大意
重点词汇 noise, policeman, wolf
重点句型 ①My wife thinks that it could be an animal, but my friends and I think it must be teenagers having fun.②One woman in the area saw something running away.③The noise－maker is having too much fun creating fear in the neighborhood.
难点 There must be something visiting the homes in our neighborhood.
1. interview采访；面试
【点拨】interview作动词时，意为“采访；面试”。如：
The newspaper reporters interviewed our headmaster.
报社记者采访了我们的校长。
【延伸】interviewer是名词，意为“采访者”；interviewee也是名词，意为“被采访者”。
2. noise声音；噪音
【点拨】noise是名词，意为“噪音；喧闹声”，常指不悦耳、不和谐的嘈杂声。如：
①Every night, we hear strange noises outside our window.
每天晚上，我们都听见窗外有奇怪的噪音。
②I couldn't stand the noise. I was awake almost all night.
我无法忍受那个噪音，我几乎整晚都醒着。
【辨析】noise, voice与sound
三者都为名词，都含有“声音”的意思，但有区别。
(1)noise指嘈杂、刺耳的声音。
(2)voice指人说话的声音、嗓音或嗓子。
(3)sound指耳朵能够听到的声音。它是表示声音的最普通的词(自然界的风声、水声等)。有时用来指科学上的声音。
如：
①Don't make so much noise!
别大声喧哗！
②We should speak in a low voice in public.
在公共场合，我们应该低声说话。
③Sound travels fast, but light travels faster.
声音传播的速度很快，但光的速度更快。
1．There must be something visiting the homes in our neighborhood, but what is it 一定有什么东西闯入了我们的小区，但那是什么呢？
【点拨】(1)there must be是there be句型与情态动词must的连用，表示对现在情况的肯定推测，意为“一定有……”。
如：
①There must be someone taking a shower at home.一定有人在家里洗澡。
②There must be a bee in the box, isn't there 盒子里一定有一只蜜蜂，是不是？
(2)“There be＋主语＋现在分词”句型表示主语和动词之间存在主动关系，意为“有……正在做某事”；“There be＋主语＋过去分词”句型表示主语和动词之间存在被动关系，意为“有……被……”。
如：
①There are some students playing basketball.
有一些学生正在打篮球。
②There were more than 5，000 people killed in the accident.
在这次事故中，有五千多人失去了生命。
2. At first, I thought that it might be a dog, but I couldn't see a dog or anything else, either.
起初，我认为那可能是一条狗，但是我没看见狗，也没看到别的东西。
【点拨】but作连词，连接两个并列句，意为“但是；然而”。
如：I didn't go to the dentist yesterday, but I bought some medicine.
我昨天没有去看牙医，但是我买了点药。
【延伸】though与however也可以表示转折，though引导从句，不能与but连用；however是副词，放在句首或句中，往往用逗号与前后隔开，语气比较强。如：
①Though he is old, he still works hard.
虽然他老了，但是他仍努力工作。
②He has been to Japan many times. However, he can't speak Japanese at all.
他去过日本很多次，但是他一点日语都不会讲。