The meals are cooked by me everyday.A new house is being looked for by him.The sweater was made by my mother for me. 主语提前，动词2113改为过去分词，5261主语是人时4102后面用by+人 结构为1653be+V-pp
主动句改被动句时，2113一是时态不5261能改变；二是变为被动语态后4102，谓语动词要和被动语态的主语1653在人称、数上保持一致。还要作如下变动：把主动语态的宾语变为被动语态的主语；主动语态的主语放在by的后面，组成介词短语，再把这个介词短语放在被动语态的谓语动词之后。在动作的执行者无须说明或不必要强调时，by短语可以省略。例如：They will open a new supermarket there soon. 他们很快将在那里开办个新超市。A new supermarket will be opened there soon. 一个新超市不久将在那里开办。 The doctor gave two lectures in English. 那位医生用英语讲了两次课。 Two lectures were given by the doctor in English. 由那位医生用英语讲了两次课。
你好，很高兴为你解答。2113你的句子也没有太大问5261题，除了by后面应该用宾格4102以外。关键是1653标准答案省略了“问的主语”他们。题目意思是：他们可以问你很多个人问题。答案是：你可以被问很多个人问题。 这个句子里，这些问题是谁问的呢？因为不是必要，因此也可以省略。标准的答案应该是：You may be asked a lot of personal questions by them.有帮助请及时采纳，谢谢。
1. We were shown by Alice her pictures in London.2. Is there a new railway being built in the east of the town?3. MP3s and CDs are taking place of radios and recorders.4. The postmen deliver newspapers to every house.5. He has always been encouraged by his parents to study a foreign language.6. He was told about the exchange student programme by his Chinese instructor when he was a university student.7. He hopes that he will be offered a scholarship to study in a university in China someday.
^1. i was showed the room where they lived by them.2. The pupils are being kept at school for a revision by the teacher. 祝你学习2113进步，更上一层楼！5261 (*^4102__^*) 不明白的再问哟，1653请及时采纳，多谢！