From 592413c090c43df1f488fb2a4620d81cbdcaf8a8 Mon Sep 17 00:00:00 2001
From: dingmos <dingbill201@gmail.com>
Date: Tue, 19 Apr 2022 09:04:30 +0800
Subject: [PATCH] Update README.md

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 49ce4f1..7f20e51 100644
--- a/README.md
+++ b/README.md
@@ -81,4 +81,6 @@ Homework 实现：完整实现代码。[Github_SmallPond/MIT6.828_OS](https://gi
 
 3. 6.828 和 6.s081 有什么区别
 
-2018 之前只有 6.828，后来出现了6.s081。简单来说，6.828面向研究生，6.s081 面向本科生。
+2018 之前只有 6.828，后来出现了6.s081。简单来说，2018之后的6.828面向研究生，重点是操作系统研究；6.s081 面向本科生，有些类似2018年6.828的低难度版？（我没有做）。以下是官方介绍。
+
+> 6.828 and 6.S081 will be offered as two separate classes. 6.S081 (Introduction to Operating Systems) will be taught as a stand-alone AUS subject for undergraduates, and will provide an introduction to operating systems. 6.828 will be offered as a graduate-level seminar-style class focused on research in operating systems. 6.828 will assume you have taken 6.S081 or an equivalent class.