Explanation

“I waited until the plane took off.” āĻāχ āĻŦāĻžāĻ•ā§āϝ⧇ “took off” āĻŦā§āϝāĻŦāĻšāĻžāϰ⧇āϰ āĻ•āĻžāϰāĻŖ āĻāĻŦāĻ‚ āĻ…āĻ¨ā§āϝāĻžāĻ¨ā§āϝ āĻŦāĻŋāĻ•āĻ˛ā§āĻĒāϗ⧁āϞ⧋ āϕ⧇āύ āϭ⧁āϞ āϤāĻž āύāĻŋāĻŽā§āύ⧇ āĻŦāĻŋāĻ¸ā§āϤāĻžāϰāĻŋāϤāĻ­āĻžāĻŦ⧇ āĻŦā§āϝāĻžāĻ–ā§āϝāĻž āĻ•āϰāĻž āĻšāϞ⧋:

ā§§. “took off” āĻšāϞ⧋ āχāĻ‚āϰ⧇āϜāĻŋāϤ⧇ “āωāĻĄā§āĻĄā§Ÿāύ āĻ•āϰāĻžâ€ āĻ…āĻ°ā§āĻĨ⧇āϰ āϏāĻžāϧāĻžāϰāĻŖ āĻ…āϤ⧀āϤ āĻ•āĻžāϞāĨ¤ āĻāĻ–āĻžāύ⧇ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻŽā§‚āϞ āĻ•ā§āϰāĻŋ⧟āĻž “waited” (āĻ…āϤ⧀āϤ āĻ•āĻžāϞ) āĻāĻŦāĻ‚ āϏāĻŽā§Ÿ āύāĻŋāĻ°ā§āĻĻ⧇āĻļāĻ• “until” (“āϝāϤāĻ•ā§āώāĻŖ āύāĻžâ€)–āĻāϰ āϏāĻ™ā§āϗ⧇ āϝāĻ–āύ āφāĻŽāϰāĻž āĻŦāĻŋāĻŽāĻžāύ⧇āϰ āωāĻĄā§āĻĄā§Ÿāύ āϏāĻŽā§āĻĒāĻ¨ā§āύ āĻšāĻ“ā§ŸāĻž āĻĒāĻ°ā§āϝāĻ¨ā§āϤ āĻ…āĻĒ⧇āĻ•ā§āώāĻž āĻ•āϰāĻžāϰ āĻ•āĻĨāĻž āĻŦāϞāĻŋ, āϤāĻ–āύ āϏāĻšāĻžā§ŸāĻ• āĻ…āϤ⧀āϤ āĻ•āĻžāϞ (simple past) āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ•āϰāĻžāϟāĻžāχ āĻ¸ā§āĻŦāĻžāĻ­āĻžāĻŦāĻŋāĻ•āĨ¤ āĻ…āĻ°ā§āĻĨāĻžā§Ž, “I waited until the plane took off” āĻŦāϞāϤ⧇ āĻŦā§‹āĻāĻžā§Ÿ, “āφāĻŽāĻŋ āĻ…āĻĒ⧇āĻ•ā§āώāĻž āĻ•āϰāϞāĻžāĻŽ āϝāϤāĻ•ā§āώāĻŖ āĻĒāĻ°ā§āϝāĻ¨ā§āϤ āĻŦāĻŋāĻŽāĻžāύ āωāĻĄā§āĻĄā§ŸāĻŋāϤ āĻšā§ŸāύāĻŋāĨ¤â€

⧍. āĻ…āĻ¨ā§āϝ āĻŦāĻŋāĻ•āĻ˛ā§āĻĒāϗ⧁āϞ⧋ āϕ⧇āύ āĻ–āĻžāĻŸā§‡ āύāĻž:
â€ĸ did not take of: ‘take of’ āĻŦāĻžāύāĻžāύāĻ—āϤ āĻĒāĻĻ⧇āĻžāĻ¤ā§āϤāϰ āϭ⧁āϞ (āϏāĻ āĻŋāĻ• āĻšāϞ⧋ take off) āĻāĻŦāĻ‚ ‘did not’ āĻĻāĻŋā§Ÿā§‡ āύ⧇āϤāĻŋāĻŦāĻžāϚāĻ• āĻ…āĻ°ā§āĻĨ āϤ⧈āϰāĻŋ āĻ•āϰ⧇āϛ⧇, āϝāĻž āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻ•āĻžāĻ āĻžāĻŽā§‹āϰ āϏāĻžāĻĨ⧇ āĻ–āĻžāĻĒ āĻ–āĻžā§Ÿ āύāĻžāĨ¤
â€ĸ had not off: āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āĻ…āĻ—ā§āϰāĻžāĻŽā§āĻ­āĻŋāĻ• āĻāĻŦāĻ‚ āĻ…āĻ°ā§āĻĨāĻšā§€āύ; ‘off’ āĻāĻ–āĻžāύ⧇ āĻāϰāĻ•āĻŽāĻ­āĻžāĻŦ⧇ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻšā§Ÿ āύāĻžāĨ¤
â€ĸ had taken off: āϝāĻĻāĻŋāĻ“ āĻ…āϤ⧀āϤ āĻĒāϰāĻŋāĻĒā§‚āĻ°ā§āĻŖ āĻ•āĻžāϞ (past perfect) āĻ—ā§āϰāĻžāĻŽā§āϝāĻžāϟāĻŋāĻ•ā§āϝāĻžāϞāĻŋ āĻĒā§āĻ°ā§Ÿā§‡āĻžāϜāĻ¨ā§€ā§Ÿ āĻ•ā§āώ⧇āĻ¤ā§āϰ⧇ āĻŦā§āϝāĻŦāĻšā§ƒāϤ āĻšā§Ÿ, āϤāĻŦ⧇ ‘until’–āĻāϰ āϏāĻ™ā§āϗ⧇ āϏāĻžāϧāĻžāϰāĻŖāϤ simple past āĻŦ⧇āĻļāĻŋ āĻ¸ā§āĻŦāĻžāĻ­āĻžāĻŦāĻŋāĻ• āĻāĻŦāĻ‚ āϏāĻžāĻŽāĻžā§āϜāĻ¸ā§āϝāĻĒā§‚āĻ°ā§āĻŖāĨ¤ āĻĒāϰāĻŋāĻĒā§‚āĻ°ā§āĻŖ āĻ…āϤ⧀āϤ āĻ•āĻžāϞ āĻāĻ–āĻžāύ⧇ āĻ…āϤāĻŋāϰāĻŋāĻ•ā§āϤ āϜāϟāĻŋāϞāϤāĻž āϝ⧋āĻ— āĻ•āϰ⧇ āĻāĻŦāĻ‚ āϏāĻžāϧāĻžāϰāĻŖ āĻ•āĻĨā§āϝāĻ­āĻžāώāĻžā§Ÿ āϤ⧇āĻŽāύ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻšā§Ÿ āύāĻžāĨ¤

āϏ⧁āϤāϰāĻžāĻ‚, “took off” āĻšāϞ āĻāχ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āϜāĻ¨ā§āϝ āϏāĻ āĻŋāĻ• āĻāĻŦāĻ‚ āĻ¸ā§āĻŦāĻžāĻ­āĻžāĻŦāĻŋāĻ• āĻŦāĻŋāĻ•āĻ˛ā§āĻĒāĨ¤

āϏāĻ‚āĻ•ā§āώ⧇āĻĒ⧇: “I waited until the plane took off” āĻŦāĻžāĻ•ā§āϝ⧇ ‘took off’ āĻŦā§āϝāĻŦāĻšāĻžāϰ⧇āϰ āĻŽāĻžāĻ§ā§āϝāĻŽā§‡ āĻ¸ā§āĻĒāĻˇā§āϟ āĻšā§Ÿ āϝ⧇ āĻŦāĻ•ā§āϤāĻž āĻŦāĻŋāĻŽāĻžāύ⧇āϰ āωāĻĄā§āĻĄā§Ÿāύ āϏāĻŽā§āĻĒāĻ¨ā§āύ āĻšāĻ“ā§ŸāĻž āĻĒāĻ°ā§āϝāĻ¨ā§āϤ āĻ…āĻĒ⧇āĻ•ā§āώāĻž āĻ•āϰ⧇āϛ⧇, āϝāĻž āĻŦāĻžāĻ•ā§āϝ⧇āϰ āϏāĻžāĻ°ā§āĻŦāĻŋāĻ• āϏāĻŽā§Ÿā§‡āĻžāĻ¤ā§āĻŽāĻ• āϏāĻŽā§āĻĒāĻ°ā§āĻ• āĻāĻŦāĻ‚ āĻ…āĻ°ā§āĻĨāĻŦā§‹āϧ⧇āϰ āϏāĻ™ā§āϗ⧇ āϏ⧁āϏāĻŽā§āĻĒ⧃āĻ•ā§āϤāĨ¤