diff --git a/docs/数学基础/MITmaths.en.md b/docs/数学基础/MITmaths.en.md
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--- a/docs/数学基础/MITmaths.en.md
+++ b/docs/数学基础/MITmaths.en.md
@@ -8,7 +8,7 @@
 - Difficulty: 🌟🌟
 - Class Hour: Varying from person to person
 
-The calculus course of *MIT consists of MIT18.01: Single variable calculus* and *MIT18.02: Multi variable calculus*. If you are confident in your math, you can just read the course notes, which are written in a very simple and vivid way, so that you will not be tired of doing homework but can really see the essence of calculus.
+The calculus course at *MIT consists of MIT18.01: Single variable calculus* and *MIT18.02: Multi variable calculus*. If you are confident in your math, you can just read the course notes, which are written in a very simple and vivid way, so that you will not be tired of doing homework but can really see the essence of calculus.
 
 In addition to the course materials, the famous Youtuber **3Blue1Brown**'s video series [The Essence of Linear Algebra](https://www.youtube.com/playlist?list=PLZHQObOWTQDMsr9K-rj53DwVRMYO3t5Yr) are also great learning resources.
 
@@ -17,4 +17,4 @@ In addition to the course materials, the famous Youtuber **3Blue1Brown**'s video
 - Course Website: [18.01](https://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/syllabus/), [18.02](https://ocw.mit.edu/courses/mathematics/18-02sc-multivariable-calculus-fall-2010/)
 - Recordings: refer to course website
 - Textbook: refer to course website
-- Assignments: refer to course website
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+- Assignments: refer to course website