Unit 2 On the Weekend.Lesson 4 Helping at Home Period2参考课件(共17张PPT).ppt

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1、北师大版初中英语八年级下册Unit 2 Communication Lesson 4（第二课时）（第二课时）by smellby soundby body languagethe waysthe purposesmadsoundsubjectmadsoundsubjectmadsoundScientists have done a lot of research onsubject(adj.)1.angry 2.crazy1.(n.)something that you can hear 2.(v.)to seem to you when you hear or read about them

2、(n.)1.a thing that is discussed or studied 2.an area of knowledge that is learned in a schoolDictionary entriesCan you answer these questions?1 How do scientists study animal communication?2 What have scientists done with mice so that they can help people?3 Are people interested in animal communicat

3、ion now or for a long time?How do you know?They have done a lot of research on this subject.They have trained mice to find landmines.People have always been interested in animal communication.for a long timeCan you answer these questions?They have done a lot of research on this subject.They have tra

4、ined mice to find landmines.People have always been interested in animal communication.for a long timebegan in the pastbegan in the pastnowThey have done a lot of research on this subject.They have trained mice to find landmines.People have always been interested in animal communication.They have do

5、ne a lot of research on this subject.They have trained mice to find landmines.People have always been interested in animal communication.Find more sentences in the text.have done have trained have always been Dogs have helped the police for a long time,too.Scientists have discovered that even ants u

6、se smell.Everyone has heard birds singing.Research has shown that many other animals use sound to communicate.Animals have always used body language to communicate as well.现在完成时发生在过去，持续到现在或对现在有影响。Scientists have discovered that even ants communicate this way.Everyone has heard birds singing.现在完成时现在完

7、成时主语+助动词+过去分词I/You/We/TheyHe/She/It _ _learnedsaid seenbeenhashave have has been is has bitten barkshave found takesince 7 years ago1 She has always loved animals.2 He has never had a pet.3 Molly has been my pet for 10 years.4 I have had a pet tortoise since I was ten years old.Do you have any pets?Have you ever watched an animal?How do they communicate?HomeworkPlease write down what you know about animal communication.Thank you!