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一、在引导词上，要将疑问代词或疑问副词变为连接代词或连接副词，引导宾语从句。如：
Whose bike is this？Does anybody know？→ Does anybody know whose bike this is？
二、宾语从句的时态应与主句的时态保持一致。如：
When the train will arrive？He asked me．→ He asked me when the train would arrive．
三、在语序上，要将疑问句语序改为陈述句语序。如：
Which one do you like best？She askedme．→She asked me which one I liked best．
【注意】疑问句中主语之前的助动词若是 do／does ／did，变为宾语从句时，要先将其去掉，谓语动词再根据时态作相应的变化。
四、特殊疑问词在句中作主语，变为宾语从句时语序不变（时态应作相应变化）。如：
Who can answer the question？The teacher asked．→The teacher asked who could answer the question．
五、特殊疑问句变为宾语从句后，用问号还是用句号完全取决于主句的句式：如主句为陈述句、祈使句，句末就用句号；如主句是疑问句，句末就用问号。如：
I don't know when we shall start tomorrow．
Do you know when we shall start tomorrow？ | 
