介绍
dave：this is my mother 。mom，this is linhai。
laihai：nice to meet you。
mom：nice to meet you， laihai!
dave：and these are my grandparents。
grandparents：hi，laihai!
laihai：hello!
dave：and this is my siter，mary。and this is my brother，jim。
2025公考·省考培训课程试听预约报名