Alice和John正在看John家人的照片.Alice：What a nice photo!（Who's ）he?John:He's my father.Alice：（What's）he?John:He's a policeman.Alice：So（cool）!Who's she?John:She's （my mother我妈妈）Alice：What's she?John:（She's a nurse她是一名医生）.Alice:It's really a happy family.
有不懂的地方可以问啊