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Ask anything, any time. Your AI mentor explains concepts in simple language, adapts to your level, gives immediate feedback on exercises, and helps you think — not just get answers.
AI
Great question! The present perfect is used when the action is connected to now. Let me show you an example.
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When do I use "have been" vs "was"?
AI
Good follow-up! Here's the simple rule — and an exercise to practise it right now.