why not的用法为"why not do something",表示“为什么不做某事”。例如:Why not do some reading? why don't的用法为"why don't somebody(主语)do something",表示“为什么某人不做某事”。例如:Why don't you do some reading? 两者主要的区别就是要不要加主语。
第2个回答 2015-12-23
你好,是Why not和Why don't(Why do not) Why not和Why don't都表达一种询问的口气,提建议的语气 Why not+do something Why don't+人称+do something 例句、Why not write it down 为什么不把它写下来呢? Why don't you write it down 你为什么不把它写下来呢?