九年級英語全冊 unit 6 when was it invented section a（1a-2d）課件 新人教版 (2)-預覽頁
【正文】 there. For example, it mentioned that the zipper was invented by Whitb Judson in 1893. But at that time, it wasn’t used widely. Paul: Really? So when did it bee popular? Roy: Around 1917. invent v. 發(fā)明 ,invention n. 發(fā)明 ,inventor n. 發(fā)明者。 ③ find 強調(diào)尋找的結果，即“找到”，通常指偶然發(fā)現(xiàn)。s no such thing as a free lunch. Why do you buy such expensive clothes? about how often it39。s Daily 《人民日報》 China Daily《中國日報》 一、單項選擇。changed 。s office _______ (clean) by us yesterday. ______ (invent) has a lot of _________(invent). is used for _________ (play) music. 4.— Can you help me? — With ________(please). was cleaned inventor inventions playing pleasure and read after the tape at home. and recite 2d. Homework Thank you!
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