It is very common in your life.
It is very common in your lives.
哪句对?如此用的 life 可数还是不可数?
如此用的 life 可用作可数和不可数名词,所以 in our life 和 in our lives 都可以说,但以用复数较为一般。如:
Language plays a great part in our life. 语言在大家的生活里起着重大有哪些用途。(薄冰语法)
Some time or other in our life, we’re bound to encounter hardship. 在大家一生中总会遇见困境。(贺氏语法)
Many events in our lives go by contraries. 大家的日常有不少适得其反的状况。(牛津词典)
Science has brought about many changes in our lives. 科学给大家的生活带来了不少变化。(朗文词典)