福建省泉州市安溪县九级英语上册 Unit 2 Saving the earth Topic 2 All these problems are very serious Section A教案 （新版）仁爱版.doc

topic 2 all these problems are very serioussection ateaching aims and demands1.words and phrases: sand, although, sandstorm, desert, human being, reduce, completely, change into, stop from, blow/ wash away, as a result2.sentences: a lot of water can be saved by forests.although we have built “the green great wall”, we still need to do something to protect the environment.3.grammar: indefinite pronoun and adverb. teaching procedures:step 1 getting students ready for learningplay a short video about a sandstorm and let ss guess what kind of weather it is.step 2 lead-inshow the pictures of a sandstorm, let the ss guess how sandstorm comes into being and number the pictures in 3.t: ok, do you know how sandstorm comes into being? please look at the pictures, discuss and number them in groups.t: ok, how does the sandstorm come into being? tell me the right order, please.s1: its 4-1-5-3-6-2.step 3 pre-listeninglet the ss talk about sandstorm according to the pictures and the given words in 3 in groups.long ago, there were lots of trees and forests. but people needed some wood to build houses and do other things, so they cut down the trees day by day. and the forests have gone slowlystep 4 while-listening1 present the picture in 1a. let the ss listen to 1a once and do 1b alone.2 let the ss listen to 1a again and complete the functions of trees in 1c. they can discuss in pairs.step 5 post-listening1 let the ss read 1a in groups and then role play it.2 let the ss read again and find the important phrases in 1a. then write them down on the bb.3 lead the ss to complete the sentences with the correct forms of the given phrases in the box in 2.step 6 finishing tasklead the ss to look at the phrases. listen to the passage and circle the phrases you hear. then listen twice to complete the sentences. finish 4.step 7 summarizing and assigning homework1 sum up what they have learnt in this class.2 hmk: write a passage about how sandstorm comes into being.blackboard designall these problems are very serious.section awords:sand / sandstormalthoughdesertreducecompletelyphrases:change intostop fromblow/ wash awayhuman beingas a resultsentences:1.a lot of water can be saved by