【正文】
Listening Look at the picture, then learn the new words. Work on 2a: T:Tell Ss they will hear some interesting inventions. at the picture in the things what they are used for. the recording for the Ss to listen and number the inventions. the recording again to check the answers. Work on 2b: Ss read the chart some main sentences for the sure they know what to do. the recording for the Ss to fill in the blanks. the recording again to check the answers. Step