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四.学情分析
本节课以“环境保护”为话题,以“谈论污染和环保”为交际功能,用现在进行时、含情态动词的句子以及被动语态等结构描述污染和环境保护,学生最容易出现的问题是句子结构的运用。因此,教师要提供充分的语境让学生进行语言体验和句子结构的归纳。
五.教学过程
Teachering steps:
Step 1. Warming up
Enjoy a piece of beautiful but sad music named How Are You,Earth Mum?
让学生在歌曲欣赏中进入本节课。
Step 2.Revise and lead in
Free talk
T:Boys and girls,do you love the earth?
Ss:Yes.
T:Why?Tell me the reason.
S1:Because we live on the earth.
S2:Because the earth gives us fresh air,clean water,delicious food and other nice things.
S3:Because we have only one earth,she is our mum.
T:We all love our earth mum,but I’m sorry to hear that our earth mother is sad,she is crying,why?
S1:Because she is hurt by her children.
T:What hurt her?
S2:Too much pollution.
T:What kind of pollution?
water pollution
S3: air pollution
noise pollution
动听但忧伤的歌曲让学生感受到地球妈妈正在遭受着自己的孩子给她带来的巨大痛苦,从而引导学生去反思总结人类的不良表现。
We all love our earth mum, but why is she crying?此句见缝插针,导入本节话题。
引出污染种类,为学习1a做铺垫。
Step 3. Present
Show the picture of water pollution.
T:What caused the water pollution?
S:Factories put waste into the river.