John has learnt all the new words in the text.
1. GENERAL QUESTION: Has John learnt all the new words in the text?
2. ALTERNATIVE QUESTION: Has John learnt new words or new rules of grammar?
3. TAG QUESTION: John has learnt all the new words in the text, hasn't he?
4. SPECIAL QUESTION: What has John learnt?
5. WHO-QUESTION: Who has learnt all the new words in the text?