第三課時
module 1
step 1
1. 邀請部分學生到講臺前，描述自己的“百寶箱”中最珍貴的發明。
2. 其他學生仔細聽并猜測他們的發明。這個環節能夠檢查學生完成作業的情況，鞏固第二課時的重要語言點，以游戲娛樂的情景完成課前復習。
step 2
學生已經羅列了學校和家里的有趣發明，讓他們按照要求重新分類。
helpful inventions: _________________________________________________________________________
annoying inventions: ________________________________________________________________________
module 2
step 1 3a & 3b
1. look at the words in each picture and read them.
2. 教師領讀新單詞，提出問題，學生結對談論圖中的3項發明。
完成任務所需要的語言結構：
① what's that? it’s ...
② it's a helpful/an annoying invention.
3. t: look! a ufo is over there. some aliens are doing a survey. let's see what they want to know about us! make a list of 5 helpful inventions and 5 annoying inventions in the chart.
5 helpful inventions
why5 annoying inventions
why
personal computer
it was invented by xerox
in 1976.
it’s used for looking for
useful information.
4. t: the aliens come up with the questions. they come to ask you. 模仿3b的對話，a扮演外星人，b扮演地球人。discuss your opinions about the chart in 3a with the alien.
完成任務所需要的語言結構：
① what do you think is the most helpful/annoying invention?
② who was it invented by?
③ when was it invented?
④ what is it used for?
⑤ i think the most helpful/annoying invention is ... it was invented by... in ... and it's used for...
5. 鼓勵幾組學生表演。教師可以根據對話的內容提出問題，要求其他學生注意力集中，順便練習聽力。最后，由學生評出“最佳表演獎”，教師把用紙打印出來的“奧斯卡小金人”頒發給學生。
step 2
1. 在調查的附表里，外星人還提出一個問題：“imagine your group is alone on a tiny island. you can only have five inventions with you on the island. what would you like to choose and why?”
2. discuss in groups and decide on five inventions. talk like in 4.
3. draw a form below and fill in groups.
5 inventions
whystep 3
1. t: look! those aliens are going to leave. we'd better give them a present. if you gave a present, what would you choose? why?
2. talk about the present in groups.
3. t: the aliens don't know how to use those items from the earth. please leave a note. tell them about your present, explain the reasons why you choose it, and present your opinions and wishes for them.
i'd like to give ___________________________________________________________________________________