解析：主動句轉換爲被動句的轉換規則
英語中，主動語態和被動語態在相互轉換時，在句法上有很多技巧。下面就跟着小編一起來看看吧
大多數的SOV, SVoO, SVOC結構的主動句都可以轉換爲相應的被動句，轉換規則如下：
a) 當主動句爲SOV結構時，將主動句的賓語變成被動句的主語並將隨後的主動態動詞詞組變成被動詞詞組，原來的主語可放在隨後的by-詞組中，如不需要突出動作的執行者，也可不要by-詞組。
例如：
They punished the criminal. → The criminal was punished.
All the six senators signed the bill (法案). → The bill was signed by all six senators.
b) 如果主動句帶有情態助動詞或半助動詞，在變爲被動句時，情態動詞或半助動詞保持不變，隨後的不定式由主動態變爲被動態。
例如：
They must have finished their work. → Their work must have been finished.
They should do the work at once. → The work should be done at once.
c) 如果主動句是SVoO結構，變爲被動句時可有兩種形式：
一種是以間接賓語作主語；另一種是以直接賓語作主語。
例如：
They offered him some assistance.
→ He was offered some assistance.
→ Some assistance was offered (to) him.
d) 如果主語句是SVOC結構，變爲被動句時，將原來的賓語變爲主語，動詞主動態變被動態，原來的賓語補語變爲主語補語。
例如：
We have painted the windows white.
→The windows have been painted white.
不同的句式有不同的轉換規則，大家要用心記憶，趕快收藏吧~
