Unit 4 When was it invented?
5.回顧：主動語態變被動語規則一二三。
step 5 retell the passage by using the key phrases.
step 6 exercises for training.
a.翻譯下列詞組：
1.被…發現 ______________________ 2.根據______________
3.在室外火爐上___________________
4.fall into___________ 5.produce a pleasant smell________________
b.完成以下各題：
1.a___________ to weather report,we are going to have a few rainy days.
2.alice took amy’s bag ___________________.(錯誤地)
3. (09青島中考)chen hui __ computer games, but now he gives them up and studies hard.
a.is used to playing b.is used to play c.used to play d.is used for playing
4. (09聊城中考)li ming will be 12 next month.a new bike __ for him as a present. a.is bought b.was bought c.will be bought d.will buy
5.（09成都中考）人們意外發現格林先生對中國傳統藝術有著很高的鑒賞能力。
mr green was found _____ ________ that he had a good taste for chinese traditional art.
6.edison invented light bulbs.(變為被動句) _____________________________
step 7 homework：1. 預習reading 部分生詞和課文。
2. 完成學案section b練習。
step 8 課后學與思：___________________________________________