doctorsher
三口之家地道的翻译是nuclear family 例：I was born in a nuclear family．我出生在一个三口之家那么四世同堂类的大家庭就要译为 extended family 了 在口语表达中 ，三口之家可以译为a family of three persons 或a family of three 例句：Special offer on Sunday: a family of three is served a free Bottle of drink with their western Buffet in this restaurant. 周日优惠，三口之家来本店品尝西式自助餐均免费招待饮料一瓶 ．
毕筱倩mm
1、我家有三口人，我，妈妈和爸爸。There are three people in my family, me, mom and dad.2、妈妈是一个家庭主妇，她每天有忙不完的事要做。Mother is a housewife. She has many things to do every day.3、周末她一定要看着我把作业做完。She must watch me finish my homework at the weekend.4、爸爸是一个司机，他整天在外下乡，有忙不完的工作。My father is a driver. He goes to the countryside all day and has a lot of work to do.5、他有一副好嗓子，唱歌很好听。He has a good voice and sings well.
