1. 从句的主语如果是第一人称，变为宾语从句则与主句的主语一致；如果是第二人称，则与主句的宾语一致；如果是第三人称，不用变化。如：
 

　　“May I use your knife？”He asked me. →He asked me if he might use my knife.
 

　　“Do you know her telephone number？”He asked me. →He asked me if I know her telephone number.
 

　　2. 宾语从句的标点均由主句决定。主句是陈述句，用句号；主句是疑问句，用问号。如：
 

　　Who will give us a talk？I don’t know. →I don’t know who will give us a talk.
 

　　Do you know？Where does he live？→Do you know where he lives？