passive voice

Passive Voice 即係被動語態

例如
我把蛋糕吃了
I ate the cake.
呢個係 active voice, 如果轉做 passive voice 就會變成

蛋糕被我叫了
The cake was eaten by me.
"was eaten" 就係 passive voice.

passive voice的結構是
verb to be + past participle，即is/am/are/was/were +PP (即go/went/gone 的gone, drive/drove/driven 的driven等)

幾時用？

當該物件（object謂語）係被人take action時就用，如

I eat an apple.
咁apple 咪係object, 我係subject(主語), 意思係我食萍果，我係主角，係我對個萍果做動作（食）

如果你轉passive voice
要寫
The apple is eaten by me.
咁is eaten係passive voice的結構，而個動作就係「萍果被我食左」，因為本是object的萍果現在在這句被動句中變成左subject.

但如果你寫
The apple eats me.　就好明顯係錯，首先佢唔係passive voice的結構，而意思變左萍果食我喇。

咁如你寫
I am eaten by an apple.
結構係passive voice 的結構，但意思變左我被萍果食左，都唔岩


轉passive voice要注意兩個特點：
1.　要用passive voice結構，即verb to be （is/am/are/was/were ）+ past participle
2.本來在句尾中的object要放在句子最前面，變成subject
3. 若然知道個動作係邊個做的話, 就加埋 by 邊個

2007-03-21 22:50:25 補充：
俾幾個例子你:1. Tom draws a cat.轉Passive Voice之後A cat is drawn by Tom.2.Tom is drawing a cat.轉Passive Voice之後A cat is being drawn by Tom.

什麼時候會用?隨你啦,通常在文章有主動和被動交替使用,文章才不單調.passive voice 結構為be+過去分詞

~passive voice即是被動式,當決定要用active定係passive時,可以考慮下那個action既Doer同Doee~