Explanation

āĻĒā§āϰāĻļā§āύ⧇ āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ: “Who give you this pen?”
āĻāĻ–āĻžāύ⧇ āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻ•āĻžāĻ āĻžāĻŽā§‹ āĻŦ⧁āĻāϤ⧇ āĻšāĻŦ⧇ –
1. āĻŦāĻŋāώ⧟ (Subject): Who
2. āĻ•ā§āϰāĻŋ⧟āĻž (Verb): give
3. āĻĻā§‹āĻ•ā§āϤāĻž (Indirect Object): you
4. āϏāϰāĻžāϏāϰāĻŋ āĻŦāĻ¸ā§āϤ⧁ (Direct Object): this pen

āϕ⧇āύ Passive Voice āϤ⧈āϰāĻŋ āĻ•āϰāϤ⧇ āĻšāĻŦ⧇?
Passive Voice-āĻ āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻĻā§‹āĻ•ā§āϤāĻž āĻŦāĻž āĻŦāĻ¸ā§āϤ⧁āϕ⧇ āύāϤ⧁āύ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻŦāĻŋāώ⧟ āĻšāĻŋāϏ⧇āĻŦ⧇ āĻ•ā§āϰāĻŋ⧟āĻž āĻŦāĻž āĻŦāĻŋāϝāĻŧā§‹āĻ—āĻ•āĻžāĻ°ā§āϝ⧇āϰ āĻŽāĻžāĻ§ā§āϝāĻŽā§‡ āĻĒā§āϰāĻ•āĻžāĻļ āĻ•āϰāĻž āĻšā§ŸāĨ¤ āĻ…āĻ°ā§āĻĨāĻžā§Ž, āĻāĻ–āĻžāύ⧇ āφāĻŽāĻžāĻĻ⧇āϰ āϞāĻ•ā§āĻˇā§āϝ “you” āĻŦāĻž “this pen”–āĻāϰ āĻŽāĻ§ā§āϝ⧇ āϝ⧇āϟāĻŋ āĻ­āĻŋāĻ¨ā§āύāĻ­āĻžāĻŦ⧇ āϗ⧁āϰ⧁āĻ¤ā§āĻŦ āĻĒāĻžāĻŦ⧇ āϏ⧇āϟāĻŋāϕ⧇ āύāϤ⧁āύ āĻŦāĻžāĻ•ā§āϝ⧇ āĻŦāĻŋāώ⧟ āĻŦāĻžāύāĻžāύ⧋āĨ¤

āϧāĻžāĻĒ ā§§: āĻĒā§āϰāĻļā§āύāĻŦāϚāĻ• āĻļāĻŦā§āĻĻ⧇āϰ āĻĒāϰāĻŋāĻŦāĻ°ā§āϤāύ
āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ⧇ “Who” āĻ°ā§Ÿā§‡āϛ⧇āĨ¤ Passive āχāĻ¸ā§āϝ⧁āϤ⧇ “Whoâ€ā§Ÿā§‡āϰ āĻ¸ā§āĻĨāĻžāύ⧇ “By whom” āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ•āϰ⧇ āϜāĻžāύāϤ⧇ āϚāĻžāχāĻŦ “āĻ•āĻžāĻĻ⧇āϰ āĻĻā§āĻŦāĻžāϰāĻžâ€ āĻŦāĻž “āĻ•āĻŋāϏ⧇āϰ āĻŽāĻžāĻ§ā§āϝāĻŽā§‡â€?

āϧāĻžāĻĒ ā§¨: āωāĻĒāϝ⧁āĻ•ā§āϤ auxiliary verb āύāĻŋāĻ°ā§āĻŦāĻžāϚāύ
āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ⧇ āĻ•ā§āϰāĻŋ⧟āĻž “give” āĻĒ⧇āϞ⧇āύ Simple Present TenseāĨ¤ Passive Voice āϤ⧈āϰāĻŋ āĻ•āϰāϤ⧇ āĻšāĻŦ⧇ Present Simple Passive, āϝ⧇āĻ–āĻžāύ⧇ auxiliary verb āĻšāĻŦ⧇ “is/are” (broad subject-on-dependency āĻāϰ āĻ“āĻĒāϰ āύāĻŋāĻ°ā§āĻ­āϰ āĻ•āϰ⧇)āĨ¤ āĻāĻ–āĻžāύ⧇ āύāϤ⧁āύ āĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻŦāĻŋāώ⧟ āĻšāĻŦ⧇ “you” (āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āĻĒ⧁āϰ⧁āώāĻŦāĻžāϚāĻ• āĻāĻ•āĻŦāϚāύ), āϤāĻžāχ āφāĻŽāϰāĻž “are” āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ•āϰāĻŦā§‹āĨ¤

āϧāĻžāĻĒ ā§Š: past participle āĻŦā§āϝāĻŦāĻšāĻžāϰ
“give” āĻāϰ past participle āĻšāϞ⧋ “given”āĨ¤ āĻ…āϤāĻāĻŦ, passive āĻ•ā§āϰāĻŋ⧟āĻž āĻšāĻŦ⧇ “are given”āĨ¤

āϧāĻžāĻĒ ā§Ē: āĻŦāĻžāĻ•ā§āϝ⧇āϰ āϏāĻ āĻŋāĻ• āĻ•ā§āϰāĻŽāĻžāύ⧁āϏāĻžāϰ
Passive āĻĒā§āϰāĻļā§āύ⧇āϰ āĻ•ā§āώ⧇āĻ¤ā§āϰ⧇ āĻ•ā§āϰāĻŽ āĻšāĻŦ⧇ – āĻĒā§āϰāĻļā§āύāĻŦāĻžāϚāĻ• āĻļāĻŦā§āĻĻ + auxiliary + subject + past participle + (by + agent) + āĻŦāĻ¸ā§āϤ⧁āϰ āωāĻ˛ā§āϞ⧇āĻ–āĨ¤
āĻāĻ–āĻžāύ⧇ –
āĻĒā§āϰāĻļā§āύāĻŦāĻžāϚāĻ• āĻļāĻŦā§āĻĻ: By whom
auxiliary + subject + past participle: were you given
agent āύ⧟, āĻ•āĻžāϰāĻŖ āφāĻŽāϰāĻž āĻœā§‡āύāĻžāϰ⧇āϟāϰ āĻŦāϞāϤ⧇ āϚāĻžāχ “this pen” – āϤāĻŦ⧇ āĻšā§‚āĻĄāĻŧāĻžāĻ¨ā§āϤ āĻŦāĻžāĻ•ā§āϝ⧇ “this pen” āĻĨāĻžāĻ•āĻžāϰ āĻĻāϰāĻ•āĻžāϰ āύ⧇āχ āĻ•āĻžāϰāĻŖ āĻāϟāĻž already impliedāĨ¤ āϤāĻŦ⧇ clarity-āϰ āϜāĻ¨ā§āϝ “this pen” āϝ⧋āĻ— āĻ•āϰāϞ⧇: “By whom were you given this pen?”

āĻāχ āĻŦāĻžāĻ•ā§āϝāχ “Who give you this pen?” āĻāϰ āϏāĻ āĻŋāĻ• Passive Voice āϰ⧂āĻĒāĨ¤

āϏāĻ‚āĻ•ā§āώ⧇āĻĒ⧇
Passive āϤ⧈āϰāĻŋāϰ āĻĒā§āϰāϧāĻžāύ āϧāĻžāĻĒ:
1. āĻĒā§āϰāĻļā§āύāĻŦāĻžāϚāĻ• āĻļāĻŦā§āĻĻ āĻ…āύ⧁āϞāĻŋāĻĒāĻŋ, āĻĒā§āĻ°ā§Ÿā§‹āϜāύāĻŽāϤ⧋ āĻĒāϰāĻŋāĻŦāĻ°ā§āϤāύ (“Who” → “By whom”)
2. āĻŦāĻŋāώ⧟ āĻ“ verb-tense āύāĻŋāĻ°ā§āϧāĻžāϰāĻŖ (Present Simple Passive → “were â€Ļ given”)
3. āĻ•ā§āϰāĻŋ⧟āĻž past participle-āĻ āϰ⧂āĻĒāĻžāĻ¨ā§āϤāϰ
4. āĻŦāĻžāĻ•ā§āϝ⧇ “by” āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ•āϰ⧇ Agent āĻŦāĻž āĻ•āĻ°ā§āϤāĻžāĻ•āĻ°ā§āĻ¤ā§āϰāĻŋāĻ•ā§āϤāĻž āĻĻ⧇āĻ–āĻžāύ⧋ (āϝāĻ–āύ āĻĒā§āϰāĻļā§āύ⧇ Agent āϜāĻžāύāϤ⧇ āϚāĻžāĻ“ā§ŸāĻž āĻšā§Ÿ)

āĻāχ āĻĒāĻĻā§āϧāϤāĻŋ āĻŽā§‡āύ⧇ “By whom were you given this pen?” āĻšāĻšā§āϛ⧇ āϏāĻ āĻŋāĻ• āωāĻ¤ā§āϤāϰāĨ¤