and/or的区别用法

问题描述:

and/or的区别用法
On Saturday morning,ten kids did their homework or studied.
Seven kids watched a movie or stayed at home and watched TV.
以上两句话的OR是说明意识.AND/OR的区别是什么

and是和的意思.用于肯定表示什么和什么.
or在否定句中也表示和.如:I don't like apples or pears.意思是我苹果和梨都不喜欢.or在问句中表选择,如:Do you like apples or pears?意思是你喜欢苹果还是梨.