Google search gives about 19,500,000 results for "haven't known" and about 12,500,000 results for "haven't knew". So I am a bit confused about this.
Could anyone please explain how should I say and why?
Learn English – “Haven’t known” and “haven’t knew”
grammaticalitysimple-past-as-past-participleverbsword-choice
Related Topic
- Learn English – “Please explain” or “explain please”
- Learn English – Be careful for what you eat or Be careful what you eat
- Learn English – “Translated in” vs. “translated to”
- Learn English – during, while or whilst (the) rain
- Learn English – “I was too surprised to say anything (or) something”
- Learn English – “absent in” or “absent from”: word usage and prepositions
Best Answer
Have is an auxiliary verb. When we use have, we should use the past participle form of the verb. In your example, the past participle of know is known, not knew.
(http://dictionary.reference.com/browse/known)
Seeing the number of Google results may be one way of knowing the truth. However, since we are talking about grammar here (which has rules), there are lots of good references in the Internet that can help you.