豆浆机有网无网:My parents and I are both at home. 次句为什么用both?

My parents and I are both at home. 次句为什么用both? They are my father,my mother and I.??? I have a good flight home and my parents and sisters 这句话错在哪儿 请问“My parents and I were ___ at home yesterday.此句填both 还是 all? My parents and I are__at home. 次句用both 和all 都可以吗？ Whenever I feel tired and disappointed,my parents will encourage me: There are three people in my family: my father ,my mother and I . 翻译:please stay for supper.和my parents are waiting for me .I'm sorry.I've got to go. 谁知道because you are my man and I'm your women谁哪首歌里的歌词？ My classmates and I are ___at home. 次句用both还是all?