Grammar & WritingUnit6When was it When was it invented ?invented ?1. 一般过去时的被动语态结构式： （ 1 ）肯定句：主语 + was /were+ 动词的 过去分词 +(by+ 人称代词宾格 )+ 其他 eg ： English was studied (by us)three years ago. （ 2 ）否定句：主语 + was /were+ not + 动 词的过去分词 +(by+ 人称代词宾格 )+ 其他 eg ： English was not studied (by us)three years ago.GrammarGrammar一般过去时态的被动语态一般过去时态的被动语态 （ 3 ）疑问句： Be(Was/Were)+ 主语 +动词的过去分词 + （ by+ 人称代词宾格） +其他？ eg ： Was English not studied (by us)three years ago? （ 4 ）特殊疑问句： What/Where/ When +was /were + 主语 + 动词的过去分词 + 其他 ? eg: When was English studied by us?时态肯定形式 否定形式疑问形式一般过去时S +was/were+doneS +was/were+not + doneWas /Were+S + done?Maria bought the book last year. ( 主动句 )The book was bought by Maria last year. When was the book bought by Maria?What was bought by Maria last year?被动句：总结：各种句型的主动语态变为被动语态2. 使用被动语态应注意的几个问题(1) 不及物动词无被动语态。What will happen in 100 years? 100 年后将会发生什么事 ? (2) 有些动词用主动形式表示被动意义。This pen writes well. 这支钢笔好用。This new book sells well. 这本新书很畅销。3. 感官动词或使役动词使用省略 to 的动词不定式 , 主动语态中不带 to, 但变为被动语态时 , 必须加上 to 。My mother makes me do housework every day. =I am made to do housework by my mother every day. 妈妈每天让我干家务。I saw them play basketball yesterday. =They were seen to play basketball by me yesterday. 昨天我看见他们打篮球了。4. 如果是接双宾语的动词改为被动语态时 , 直接宾语 ( 物 )作主语 , 那么动词后要用介词 , 这个介词是由与其搭配的动词决定的。He gave me a book. →A book was given to me by him. 他给了我一本书。He showed me a ticket. →A ticket was shown to me by him....
