If LanguageTool installed the dictionaries and created the folder of dictionaries, check its folder at /Users/yourname/Library/Application Support/Sublime Text 3/Packages/
.
If it doesn’t work, you need to hack and merge the English dictionary.
The English dictionary isn’t listed in that package, because it is inside Sublime Text3.app
Backup Sublime Text 3.app before.
Go to Finder, press Cmd + Shift + G and copy and paste /yourname/Applications/Sublime Text.app/Contents/MacOS/Packages/Language - English.sublime-package
Do not open the file Language - English.sublime-package
with Sublime Text, but with TextEdit or Atom, and also open the ja.dict
with Atom or TextEdit, copy everything from the file ja.dict
and paste on the end of the file Language - English.sublime-package
. Save it and open the app. Test two sentences in English and Japanese, and see if it works.
If it doesn’t work, restart to the backup of Sublime Text3.app, search at Package Control: Install Package and type “French”, you will install the French dictionary which will appear in the packages folder of Sublime Text and copy the ja.dict to the folder of French dictionary.