其他搭配：

　　 die of 死于（内部原因比如疾病，衰老，情感等）

　　 die from 死于（外部原因，由环境造成的、主要指事故，地震等）

　　 die off 一个个死去

　　【巩固练习】

　　（1）Those species inadaptable to changing conditions may____________

　　（2）The plants in the garden are _________because there has been no rain.

　　（3）The patient______________ the doctors' neglect of duty.

　　（4）Mary did ______________ love.

　　Supposed answers:

　　(1) die out (2) dying off (3) died from (4) died of

　　Step 3 A discussion

　　T: Just now we have said that the wildlife are endangered and dying out.And now let's see what we human beings have done to them.

　　Then the teacher will the students some pictures on people's hunting for animals without mercy.(The aim is to shock the students and rise a natural feeling to protect them)

T: More and more animals are killed by humans , what should we do to protect the wild animals? Now I will give you 5 minutes to have a