Chinese is points of different context, context. Have different meanings Three questions 1 你在那里读书吗？ 2 你在那里上学吗？ 3 你在那里念书吗？ The three questions in three words same meaning 一 but ,你在读书吗？回答：我在读书 Here the "我在读” Also have context Can be is reading a book Also can be in place to go to school 二 你在上学吗？ 答：在/没有。 just You go to school? 三 你在念书吗？And above the same 读书、 意思一， 语境（你正在读一本书）问：你在读书吗？ 你可以答：我正在读这本书。 意思二，语境（你是否在学校读书）问：你在读书吗？你可以答：我在某某学校读书。 meaning a, context (you are reading a book) ask: are you 读书? You can answer: I was reading the book. Meaning two, context (whether or not you are in school) ask: are you reading? You can answer: In so-and-so school Hope I can help you ！！！

1.上学=go to school 2.both 读书 and 念书 mean "read book". notice:the three phrases also have another same meaning. For example,when somebody ask you "what do you do?" ,you could tell them "我还在上学/读书/念书(=i'm still a student,and 念书 is better )。"

1、三者都有go to school or be a student 的意思，但“上学”只有这个意思 2、“念书”和“读书”没有差别，它们都可以表示“read ”，但“读书”更常用

they are the same meaning.