学习笔记:
father:爸爸
例句:His father was a professor of medieval studies.
他的父亲是研究中世纪历史的教授。
mother:妈妈
例句:He recognized his mother's handwriting on the envelope.
他认出信封上他母亲的手记。
brother:哥哥
例句:Must your brother tag along with us everywhere we go?
你兄弟干吗总紧跟着我们?
sister:姐姐
例句:She was intriguing with her sister against her mother.
她和妹妹串通捣鬼和母亲作对。
baby:婴儿
例句:I must mind the baby while Mum goes to the shops.
妈妈去买东西时我必须照看这婴儿。