1、Unit 4When was it invented ?Section ATalk about the history of inventions.The passive voice.Language Goals:Grammar Focus:1b Listen and match the inventions with the dates.ab edc187618851927197119761c1cWhen was the telephone invented ?I think it was invented in 1876.Julie Thompsonbattery-operated sli
2、ppersChelsea Lanmonheated ice cream scoopJayce Coziar and Jamie Ellsworthshoes with adjustable heels2a Listen and number the inventions inthe order that you hear.3 1 22bWho was it / were they invented by ?It was/ They were invented by Chelsea Lanmon.3bWhat do you think is the most helpful invention?
3、I think the most helpful invention is the light bulb.Why is that?Well, it gives people more time to workand play every day.The passive voice.被动语态被动语态英语中动词有主动语态和被动语态两种语态 . 主动语态表示主语是动作的执行者 ,被动语态表示主语是动作的承受者 , 在被动语态中动作的执行者有时用 by短语表示出来 .被动语态的 构成构成 :助动词 be+ (及物 动词的 ) 过去分词 一般现在时一般过去时am (is, are) + donewas (were) + done
