Skipping the puff of air (aspiration) at word start, making "pat" sound like "bat".
Especially tricky for speakers of: Arabic, Korean.
These two words differ by exactly one sound. Tap both — can you hear it?
Record yourself saying pen, then compare with the target. Your audio stays on this device — nothing is uploaded.
Tap the speaker to hear each word; tap the word for its full pronunciation page.