In this video, learn English grammar and learn the difference between "didn't" and "wasn't" in past negative sentences.

In sentences, writing, or speaking, the base form should always follow didn’t. Regular practice, checking the context, and comparing past tense forms helps make the difference clear.

As well, haven’t ”have not,haven’t”,”did not,didn’t”. The only difference is that we use the shortened more and save the longer ones (have not) to make our point stronger.

Netflix's 'You' starring Penn Badgley is returning for a fifth and final season, which will premiere in April 2025. Here's everything to know about the new and returning cast, plot and more

'You' will end with its upcoming fifth season. Here's what we know about Joe Goldberg's last brutal hurrah, including cast, spoilers and more.

Check out everything you’ve ever wanted to know about You. Get to know the cast, watch bonus videos and so much more.

Master forming past tense questions with "did" and negative sentences with "didn't." Learn the simple rules with charts and examples for English beginners.

Correct spelling, explanation: didn’t is a short and the usual spoken form of did not. Did is a past tense form of the verb do and didn’t is a past tense form of the short don’t.

(Definition of didn't from the Cambridge Academic Content Dictionary © Cambridge University Press)