when was it inventde(period one---grammer focus)

1、Unit 6 when was it Unit 6 when was it invented?invented?Grammar focusGrammar focusPassive voice of past tensePassive voice of past tense语态 英语中两种语态两种语态 主主动动语态：主语是动作的执行者 Egg : People grow tea in Hangzhou. 被被动动语态：主语是动作 的承受者 Egg :Tea is grown by people in Hangzhou.时态（十六种 ） 1、一般一般现在时现在时 2、一般一般过去时过去时 3、一般

2、一般将来时将来时 4、过去将来一般时 5、现在完成时、现在完成时 6、过去完成时、过去完成时 7、将来完成时 8、过去将来完成时 9、现在进行时、现在进行时 10、过去进行时、过去进行时 11、将来进行时 12、过去将来进行时 13、现在完成进行时、现在完成进行时 14、过去完成进行时 15、将来完成进行时 16、过去将来完成进行时一般现在时的被动语态结构 English is spoken by many people.肯定句结构：be(amisare) + v过去分词 Is English spoken by many people?一般疑问句结构： Be(AmIsAre )(句首）+主语

3、+V过去分词+其它+？ 特殊疑问句结构：特殊疑问词+be( amisare) +主语+V过去分词+其它+？ This This is a zipper.is a zipper. It was invented in It was invented in 18931893. Who was it invented by?Who was it invented by? It was invented by Whitcomb It was invented by Whitcomb JudsonJudson.This is a telephone.The telephone was invented

4、by Alexander Graham Bell in 1876. This This is a fridge.is a fridge. The fridges were The fridges were soldsold at a low price on last at a low price on last FridayFriday.一般过去时的被动语态结构：主语+be(waswere)+及物动词的过及物动词的过去分词去分词+其它其它（主语是第一、三人称单数或不可数名词时was 主语是第二人称或复数名词时were） Zipper was invented in 1893. The tel

5、ephone was invented by Alexander Graham Bell in 1876. The fridges were sold at a low price on last Friday.一般过去时几种句式的被动语态结一般过去时几种句式的被动语态结构构Zipper was invented in 1893. Was it invented in1893 ?When was it invented ?肯定句结构：waswere + V过去分词一般疑问句结构：WasWere(句首）+主语+V过去分词+其它+？特殊疑问句结构：特殊疑问词+ waswere +主语+V过去分词+

6、其它+？要点分析 什么时候使用一般过去时的被动语态？当动作发生在过去且主语是动作的承受者 一般过去时的被动语态结构(肯定的陈述句）主语+be(waswere)+及物动词的过去分词+其它（注：那么否定的陈述句呢？）一般疑问句结构，特殊疑问句结构是什么？练习*1.My camera _by somebody last night.A. Steal B. stoleC. was stolen D. is stolen *2. Where did you take these photos?（变为被动语态）Where _these photos_?答案：1.C 2. weretaken练习*3. Ou

7、r parents advised us not to go out alone.(变为被动语态）_ _ _advised to go out alone. *4. Different writers translated the book into different languages.（变为被动语态）The book _ _into different languages by different writers.答案：3.We were not 4. was translatedAnswers of 4b 1.were invited 2.were brought 3.was locked ; rang 4.were told; broke 5.were eaten;likedHomework 1.Do exerc