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 dont know. I dont know who will give us a talk.
Do you know？Where does he live？Do you know where he lives？