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1、One mans meat is another mans poison.Something that one person likes may be distasteful to someone else.第1页/共14页ExamplesJill:I dont understand why Don doesnt like to read science fiction.Its the most interesting thing to read.Jane:One mans meat is another mans poison.I wouldnt want to do her job,but
2、 she seems to love it.Oh well,one mans meat is another mans poison.第2页/共14页第3页/共14页Do you think frogs are useful or harmful animals?In what way?discuss with your partner.Try to give some examples to support your ideas.discussion第4页/共14页You may begin like this:1.In my opinion,frogs are useful animals
3、,because2.As far as Im concerned,frogs are harmful animals3.We cant simply say frogs are useful or harmful4.Generally speaking,5.Pest 害虫害虫 beneficial insects 益虫益虫 crops 庄稼庄稼第5页/共14页We cannot simply say frogs are useful or harmful because every coin has two sides.The advantages of frogs are that they
4、 can eat harmful insects and be protective of the crops,and some parts of them are medicine materials;on the other hand,some of them are poisonous to human beings and sometimes they are kind of noisy.Suggested answer:第6页/共14页第7页/共14页Read the article carefully to complete the following chart.Team 2Te
5、am 1Team work第8页/共14页The Coqui FrogsFeaturesThe coqui is a and frog about long.It hides in areas during the day and moves at night.The call of a male coqui sounds like .Where,when andhowThe coqui frogs are originally from _ and _.They arrived in _ about ago.They were brought in accidentally in _ of
6、plants.tinybrown5 centimeterswet protectedonto trees to feed,or to call to femalesKo-Kee!Puerto RicoFloridaHawaii10 yearsshipmentsLets check the work of Team 1第9页/共14页The Coqui FrogsCurrent situationTheir numbers have sharply _ and they have quickly _ around the Hawaiian Islands.Threat toenviron-men
7、tThey eat every night.They are affecting in Hawaii.The loud calls of the frogs make it difficult at night.They have no natural enemies to reduce .Efforts to stoptheir spreadIn Hawaii,it is a crime to ,_ or .The Department of Agriculture is trying to find an .For now,the frogs may only be caught .inc
8、reasedspreadthousands of insectsthe tourism industryto sleeptheir population sizetransportsellset the frogs freeeffective chemicalby handLets check the work of Team 2第10页/共14页A tiny frog with a sharp noise has invaded the Big Island and wont shut up.Associated PressThe coqui frog population has been increasing in Hawaii since 1988,but just recently exploded.Department of Agriculture,HawaiiWhat does the Big Islandrefer to?predictionThe Coqui in Hawaii is useful or harmful?how do you know?A sharp noiseShut upexploded第11页/共14页Hawaii第12页/共14页第13页/共14页感谢您的观看！第14页/共14页