Wildlife p rotection(一)
主讲教师：麻雪玲 北京市英语教师
本讲目标
If their habitat is threatened or they cannot find enough food, their numbers may decrease.
反义词：increase
1. Student numbers have decreased by 500.
2. Student numbers have decreased to 500.
3. The species of bird is decreasing in number e very year.
4. The number of new students decreased from 800 to 260 this year.
As a result these endangered ani mals may even die out.
1. By the time he left the cave, the fire had died out.
2. Many old customs are dying out.
1. The wind died away, and the leaves became silent.
2. The members of the family had all died off for no reason.
3. The old man died from drinking polluted water.
4. The old man died of cancer.
