1. Languagetool implementation
David Ling

2. Architecture Window cmd: java –cp languagetool_path txt_path
Submit form data
Web interface
AJAX: XMLHttpRequest() Jquery: textarea highlight
Python http server
import cgi
from http.server import BaseHTTPRequestHandler, HTTPServer
LanguageTool
Return json
Return json

3. Implementation of custom rules
Mathematics lessons use English.
Correct: Mathematics lessons are conducted in English.

4. Implementation of custom rules
I concerned about you.
Correct: I am concerned about you.

5. Implementation of custom rules
More attentions should be given to the weaker students.
Correct: attention