Unit 4 When was it invented?
Part 1: Teaching design (第一部分:教学设计)
Structures: Passive voice (questions and statements)
Target language: When was the telephone invented?
I think it was invented in 1876.
Vocabulary: salty, sweet, sour, crispy, pleasant, potato chips, slipper, leaf, fire, scoop, light bulb, telescope, microwave oven, abacus, camera, beverage, be invented by, be used for, by mistake, by accident
Learning strategies: Brainstorming, Role playing
SECTION ..