人教版八年级英语下册《What's the highest mountain in the world?》SectionB PPT(第3课时)，共17页。
Guess
Can you guess what the animal is?
They are huge animals.
They live in the sea.
They can sing songs.
They can jump high out of water.
They are very clever and also very friendly.
What are they?
Do you know?
鲸的体型是世界上存在的动物中最大的，鲸是终生生活在水中的哺乳动物，对水的依赖程度很大，以致它们一旦离开了水便无法生活，鲸形状像鱼，鼻孔在头的上部，用肺呼吸。体长可达三十米，是现在世界上最大的动物。
鲸为适应水中生活，减少阻力，它们的后肢消失，前肢变成划水的浆板。身体成为流线型，酷似鱼。因而它们的潜水能力很强，小型齿鲸可潜至100-300米的水深处，停留4-5分钟，长须鲸可在水下300-500米处待上1小时，最大的齿鲸--抹香鲸能潜至千米以下，并在水中持续2小时之久。
Key points
1. At 9:00 a.m., they find that most of the babies are already awake and hungry.
英语中，awake常用于be, stay, keep, lie之后，作表语；但也可与shake等动词搭配，表示“某人摇醒他人”等。
You would have to shake her awake.
你得把她给摇醒。
2. Adult pandas spend more than 12 hours a day eating about 10 kilos of bamboo.
1) 10 kilos of bamboo意为“10公斤竹子”，该结构是不可数名词量的表达法，其结构为“数词+单位名词+of+名词”。单位名词可以是单数，也可以是复数。
2) spend … (in) doing sth.意为 “花费……做某事”。
They spent two years (in) building this bridge. 造这座桥花了他们两年时间。
HOMEWORK
Write a paragraph about how to protect endangered animals, use the useful sentences in 3b
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关键词：《What's the highest mountain in the world?》PPT课件免费下载，.PPT格式；
