Mum单独出时，也就是前文出现过时用首字母大写。如果mum前面又人称代词时，小写就行，如：My mum。例句：1.Can I pick some violets for my mum?2.Mum,I'm hungry.
mum例句
1、But I heard mum calling me back at once.
2、There are many varieties ofmums.The decorative mum is often seen in gardens.Another popular type,the quillmum,has long, straight petals like a tube or needle.
3、I have a cozy home with my mum and dad.Every morning we
4、A kangaroo mum with her baby in the pouch. Taken at Hanging Rock, outside Melbourne, Australia.
5、My mum is always doing chores for her family, like cleaning the house, and washing clothes.