1. He lent me a book last week. 去掉 to me 已经是双宾语句了

2. She sent them a letter. 已经是双宾语句了

3. His mother bought him a tie.

4. Can you bring me a present?

5. He has given us some advice.

6. She passed me the salt.

7. Can you do me a favor?

8. I owe that man 100 yuan.

谓语宾语后还需要介词+介词宾语作为状语补充说明完整动作的时候，可以把介词宾语提出来作谓语的宾语：

She gave a pen to me. me是介词to的宾语。

She gave me a pen. me和pen现在都是gave的宾语，这就是双宾语结构。