解析：主動語態與被動語態的轉換規則
英語中的語態體系浩如煙海，裏面學問很大，掌握語態的用法對學習英語有很大的意義。今天，小編爲同學們帶來了相當豐富的與被動語態的用法相關的語法，一起來看看吧！
一、主動語態和被動語態概說
英語的語態分主動語態和被動語態，主動語態表示主語是動作的執行者，而被動語態則表示主語是動作的承受者。被動語態由“助動詞be+過去分詞”構成：
Everybody likes him. 大家都喜歡他。 (主動語態)
He is liked by everybody. 他受到大家的喜歡。(被動語態)
二、主動語態變被動語態的方法
1. 主動語態變被動語態的基本方法
將主動語態的賓語變爲被動語態的主語，將主動謂語變爲被動謂語(be+過去分詞)，將主動語態的主語變爲by短語(在被動句中用作狀語)：
He broke the cup. → The cup was broken by him.
【注意】若不強調動詞執行者，被動語態中的by短語通常可以省略：
He was born in 1986. 他生於1986年。
What is this flower called? 這種花叫什麼花？
2. 雙賓動詞的被動語態
雙賓動詞即指帶雙賓語的動詞，它們在變爲被動語態時，通常是把間接賓語(指人)變爲被動語態的主語，而把直接賓語(指事物)保留下來(稱爲保留賓語)：
He answered me that question. → I was answered that question by him.
有的動詞則通常把直接賓語(指事物)變爲被動語態的主語，而把間接賓語改爲介詞to 或for引起的狀語(到底用to還是for，與所搭配的動詞有關)：
He wrote her a letter. → A letter was written to her. (與動詞write搭配用介詞to)
She made him a new coat. → A new coat was made for him. (與動詞make搭配用介詞for)
有時以上兩種方式均可用：
He gave her some money. 他給她一些錢。
→ She was given some money. / Some money was given to him.
He bought her a watch. 他給她買了一塊表。
→ A watch was bought for her. / She was bought a watch.
3. 被動語態的時態
被動語態的時態由被動結構“be+過去分詞”中的動詞be來體現，其基本結構和用法如下：
★(1) 一般現在時的被動語態：am [is, are]+過去分詞
English is taught in our school. 我們學校學英語。
We are taken good care of at school. 我們在學校受到很好的照顧。
★(2) 一般過去時的被動語態：was [were]+過去分詞
He was taken to the police station. 他被帶到了警察局。
The house was built ten years ago. 這座房子是10年前建的。
★(3) 一般將來時的被動語態：will be+過去分詞
A new building will be built here soon. 不久這裏將建一棟新樓。
The meeting will be held at two this afternoon. 會議將於今天下午2點舉行。
(4) 現在完成時的被動語態：have [has]been+過去分詞
All the work has been done now. 所有的工作現在都做好了。
Have the letters been posted? 信都寄了嗎？
(5) 過去完成時的被動語態：had been+過去分詞
He said the work had been finished. 他說工作已完成了。
(6) 現在進行時的被動語態：am [is, are] being+過去分詞
My watch is being repaired by him. 我的表正在由他修理。
The plan is now being discussed. 計劃現在正在討論。
(7) 過去進行時的被動語態：was [were] being+過去分詞
He said that the man was being operated on. 他說那個人正在動手術。
He told me that a new station was being built. 他說正在修建一個新車站。
(8) 過去將來時的被動語態：would be+過去分詞
He said that the meeting would be held next week. 他說會議將於下週舉於。
★4. 含有情態動詞的被動形式
若主動語態中謂語含有情態動詞，在相應的被動語態中通常應保留該情態動詞，其結構爲“情態動詞+be+過去分詞”：
Everyone must know this. →This must be known by everyone.
請看以下帶情態動詞被動句實例：
This can’t be done in a short time. 這不是短期內可以完成的。
Can this be done by machine? 這可以由機器來做嗎?
The work must be done at once. 這工作必須馬上做了。
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