正在被的英语句式

currently in production

[被动语态」的句型,及「主动」与「被动」句型之互换「主动语态」改为「被动语态」的方法如下:主动式:主词(S)+动词(V)+受词(O)被动式:主词(原O)+be+pp.+by+受词(原S)【讲解】1. 「主动式」的主词(S)变成「被动式」的受词(O).2. 「主动式」的受词(O)变成「被动式」的主词(S).3. 「主动式」的动词改为「被动式」时,须加be动词再取过去分词;反之,须删掉be动词,过去分词转成现在式(V;V-s;V-es)或过去式.常用的五种被动语态句型:主动语态和被动语态时态要一致现在式主动与被动:V(-s, -es)(am, are, is +pp.e.g. I love English. (我喜爱英语.)( English is loved by me. (英语被我喜爱.)过去式主动与被动:V-ed(was, were +pp.e.g. He wrote the letter. (他写了这封信.)( The letter was written by him. (这封信被他写.)未来式主动与被动:(1) will V(will be pp. (2) be going to V(be going to be pp.e.g.1 She will wash the clothes. (她将洗这些衣服.)( The clothes will be washed by her. (这些衣服将被她洗.)e.g.2 He is going to sing the song. (他将唱这首歌.)( The song is going to be sung by him. (这首歌将由他来唱.)现在完成式主动与被动:have / has pp. ( have / has + been + pp. e.g. He has done his English lessons. (他已做完他的英语功课.)( His English lessons have been done by him.(他的英语功课已被他做完.)现在进行式主动与被动:am, are, is + V-ing (am, are, is + being + pp. e.g. Mr. Li is teaching English. (李先生正在教英语.)( English is being taught by Mr. Li. (英语正在被李先生教.)

is/are appling to production.

Passive - UseWe only use the passive when we are interested in the object or when we do not know who caused the action.Example: Appointments are required in such cases.We can only form a passive sentence from an active sentence when there is an object in the active sentence.Formto be + past participleHow to form a passive sentence when an active sentence is given:- object of the "active" sentence becomes subject in the "passive" sentence- subject of the "active" sentence becomes "object" in the "passive" sentence" (or is left out)Active:Peterbuildsa house.Passive:A houseis builtby Peter.ExamplesActivePeterbuildsa house.Simple Present Passive:A houseis builtby Peter.Active:Peterbuilta house.Simple Past Passive:A housewas builtby Peter.Active:Peterhas builta house.Present Perfect Passive:A househas been builtby Peter.Active:Peterwill builda house.will-future Passive:A housewill be builtby Peter.Active:Petercan builda house.Modals Passive:A housecan be builtby Peter.