一般过去时的被动语态

一般过去时被动语态格式: was/were + 过去分词

* This city was liberated in 1948. 这个城市1948年解放的。
* Some new computers were stolen last night. 一些新电脑在昨晚被盗了。
* He was elected chairman.他被选为主席。
* A note was passed up to the speaker. 有人给讲演者递上来一张纸条。