Grammarly
Grammarly Blog: Double Negatives: 3 Rules You Must Know
This page explains the 3 rules for double negatives: each subject-predicate construction should only have one negative form, a double negative is a non-standard sentence construction that uses two negative forms, and standard English is...
The Write Place
Literacy Education Online
Literacy Education Online (or LEO) is a great place to start if you need help with your writing. The homepage is organized around kinds of problems or questions you might have concerning your writing. Find your problem, click on the...