Casey
Professional Teacher
Are they both grammatically correct?

Until I met Donna, I hadn't known what friendship was


Until I met Donna, I didn't know what friendship was


Are both sentences correct, or just the first one?

May 7, 2018 7:56 PM
Comments · 8
They're both right. In fact, I think the second one sounds more natural.
May 7, 2018
They are both right. Don't listen to that other person. 
May 7, 2018

@Casey

Thanks for your question to let me brush up the application of "until" again. 

May 7, 2018
The first one is more grammatically correct, but you will hear both in spoken language, especially colloquially. What you really need in this scenario (someone correct me if they have the actual terminology down because i might be wrong) is an imperfect tense, but English doesn't quite have an imperfect tense (or a subjunctive), so you will see both forms in colloquial English.
May 7, 2018
Correct is 

Until met Donna, i didn't knew what friendship is


May 7, 2018
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Casey
Language Skills
Chinese (Mandarin), Chinese (Cantonese), English, French
Learning Language
Chinese (Mandarin), French