Frustratingly, the language option will sometimes revert to the default language.
The most effective way to remedy this is to use Microsoft Word’s styles.
If you also intend to have titles within your document,modify the Heading styles, too.
Hannah Stryker / How-To Geek
This is so that your document is consistently formatted, no matter which language you choose to use.
Using the Normal style you have already defined, bang out the first few words in the first language.
Place your cursor anywhere in the sentence and press Ctrl+Shift+S to bring up the Apply Styles dialog box.
Press Enter to go to the next line in your document.
You’re now ready to create a new style for the second language just like we demonstrated previously.
This process can be repeated for as many different languages as you wish.
you might alsocopy the newly created styles to a new Word document.