What Is Sentence Case?
In sentence case, only the first word and any proper noun in a title, heading, or subheading
are capitalized. In other words, the first letter of the first word and the first letter of any
proper noun are capital letters. The following title is represented in sentence case.
What to capitalize in sentence case
In this title, the first letter of the first word —W in What —is a capital letter.
Look at this title containing a proper noun
The technological history of Japan
Here, the first letter of the first word —T in The —and the first letter of a proper
noun—J in Japan—are capital letters.