11.主动态和被动态.ppt

被动态 请问下面句子中哪些句子表示被动态。 A. 我经常自己冲厕所。 B. 我经常被妈妈提醒去冲厕所。 C. 我吃水蜜桃。 D. 水蜜桃被吃掉了。 被动态的结构 be+动词的过去分词 e.g. The apple is eaten (by me). The book was read (by him) yesterday. 在被动态结构中，产生变化的是 A. be动词 B. 动词的过去分词 如何把主动态变成被动态 首先要找出句子中的____语和____语，因为要把主动态的____语变成被动态中的____语 而主动态的主语将放在by的后面充当介宾结构中的____语，而且by…可以______。 口诀：主宾→被主，主主→by宾，还可省略 e.g.主：I sing the song. 主宾 被：The song is sung (by me). 被主 e.g.主：He bought a pen yesterday. 主宾 被：A pen was bought (by him) yesterday. 被主 I ate an apple yesterday.(主动态) An apple was eaten yesterday.(被动态) 请判断如果把下列主动态的句子变成被动态后将是什么做主语。 1.I eat a banana every day. 2.He played computer games last night. 3.We often read books in the classroom. 4.My mother bought a lot of food yesterday. 5.I borrowed a dictionary last week. 6.He visited his uncle last Sunday. 一般现在时的被动态 is/are/am+动词的过去分词 e.g. I eat an apple every day.(主动态) →An apple is eaten (by me) every day. (被动态) 请接招！ 请把下列句子变成被动态。 1.We do our homework every day. →Our homework is done (by us) every day. 2.He often reads books. →Books are often read (by him). 一般过去时的被动态 was/were+动词的过去分词 e.g. I ate an apple yesterday.(主动态) →An apple was eaten (by me) yesterday. (被动态) 请接招！ 请把下列句子变成被动态。 1.We did our homework yesterday. →Our homework was done (by us) yesterday. 2.He read many books last year. →Many books were read (by him) last year. 一般将来时的主动态 will+动词原形/be going to+动原 一般将来时的被动态 will be+ 动词的过去分词/be going to be+动过分 e.g. I’ll eat an apple later.(主动态) →An apple will be eaten (by me) later. (被动态) 请接招！ 请把下列句子变成被动态。 1.We’ll buy some books tomorrow. →Some books will be bought (by us) tomorrow. 2.He’ll visit his uncle next week. →His uncle will be visited (by him) next week. 现在完成时的主动态 have/has+动词的过去分词 现在完成的被动态 have/has been+动词的过去分词 e.g. I’ve just eaten an apple.(主动态) →An apple has just been eaten (by me).(被动态) 请接招！ 请把下列句子变成被动态。 1.We’ve done our homework for a long t