约500字。
　　unit2 lesson1 《modern heroes》教案
　　Teaching aims:
　　To practise extensive reading in order to understand the main idea of each paragraph and guess the meaning of new words from the context.
　　To use time linkers, especially adverbs and conjunctions
　　To revise the use of Past Simple and Past Continuous
　　To practise oral English
　　Teaching difficulties:
　　To use time linkers, especially adverbs and conjunctions
　　To revise the use of Past Simple and Past Continuous
　　Teaching Aids: puter and cassette
　　Teaching procedures:
　　Ⅰ. Warming up
　　T: who do you think is modern heroes?
　　S:
　　T: what have they done? Why do you think they are heroes?
　　S:
　　T: Who is it ? (picture is Yang Liwei). Have you heard of Yang Liwei? How do you feel about him?
　　S:
　　T: Is he called hero? Why or why not?