Unit 9 When was it invented?學案
unit 9 when was it invented?學案section a
教師寄語：it’s never too late to mend. 亡羊補牢，猶為未晚。
學習目標：
學習一般過去時的被動語態和特殊疑問句。
教學重難點：
一般過去時態的被動語態
基本結構：助動詞be（was / were）+及物動詞的過去分詞
a thief was caught last night.
they were asked to speak at the meeting.
肯定式：it was made.
否定式：it was not made.
疑問式：was it made? no, it wasn’t yes, it was
學習過程：
1. 情境導入：warm-up
ask the students to be familiar with the words below according to the pictures on computer.
telephone, calculator, car, personal computer, tv, electric light, light bulb, alarm, clock, microwave oven, electric slipper.
2. 自主學習：presentation
1) 教學when was the car invented? it was invented in……
choose the three inventions of these and ask students to guess when each one was invented.
for example, you might choose car, telephone, and personal computer.
have several different students guess and write the dates on the board. ask the class to repeat the questions and answers.
[t=teacher, s=student]
t: when was the car invented ? (class repeat.)
t: good. now jackie, what was your guess?
s1: 1900
t: ok. jackie, repeat after me. the car was invented in 1900.
repeat the process with several different inventions.
at last, make students find out the real dates.
2) 教學who were the light bulbs invented by? and what are they used for ?
呈現edison and light bulbs的畫面。
tell the students edison invented light bulbs.
then ask the students to answer the questions below.
t: who were light bulbs invented by? ( class repeat )
t: good. now class repeat after me. they were invented by edison.
3. 合作探究：
1)教學 操練1a, 1c, 2c
學生看書本上1a的圖畫，根據圖畫，把1a, 1c, 2c中的語言點綜合起來，叫學生相互間回答問題。并用剛剛學到的目標句型來操練。最后，抽查幾對學生，讓他們在全班面前，按要求進行對話。
2)教學1b, 2a, 2b
首先，幫助學生明確本題的要求。接著，聽力練習，學生根據錄音內容完成1b, 2a and 2b.
最后，重放一遍錄音內容，學生跟讀。
4、拓展創新：
consolidation and extension.
完成一個任務
ask some students to read about an invention using an encyclopedia or other book from the library, or by looking up information on the internet. have the students write up a short report and draw a simple picture of the invention or bring in a photo of it. ask each students to show the picture and read his or her report to the class.
5. 梳理知識：本單元主要學習了一般過去時的被動語態，包括其結構與用法。利用幾項發明創造練習這一知識，最后用一篇小報告來完成寫作練習。
6.達標測試：