向别人介绍自己的家庭
句型：This is + 人名
William: Hello! My name is William Jenkins. This is my family.
This is Karen. Karen is my wife.
Karen: How do you do?
William: This is Lucy. Lucy’s my daughter.
Lucy: Hello!
William: This is my son, Robert.
Robert: Hi!
William: And this is Paul. Paul’s my nephew.
Paul: Hello! Nice to meet you!
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