如有可能将句子变为被动语态,有必要加上by短语
1.people grow corn in many countries
2.peter came here two months ago
3.someone made this antique table in 1900
4.great changes have taken place in beijing these years
5.an accident happened last night
6.someone stole my purse
7.the chinese invented paper,the main writing material today.
8.someone was making the coffee when i walked into the kitchen
9.translators have translated that book into many languages.
还有很多我都没有写,保证有加分,我是怕先给悬赏分没人回答我就白付出了.悬赏分一般的20后还加上30分!要尽量准确的.这些句子中还有不能变为被动语态的