【正文】
+ done + done was/were 一般過去時 was/were+being 過去進行時 would+be 過去將來時 had+been 過去完成時 How can we change a sentence into the passive voice ? 1. Find out the object of the sentence and use it as the subject of the sentence with the passive voice. 2. Decide the tense of the sentence and use the related form of its passive. 3. If necessary, use “by” to join the former subject, which should be put into its object form. When do we use the passive voice ? Many houses will be built here. 1. 不知道或沒必要指出動作的執(zhí)行者。 Change the following sentences into the passive voice: 1. All of us like her. 2. We are discussing the question. 3. W