Explanation

āύāĻŋāĻŽā§āύ⧋āĻ•ā§āϤ āĻŦāĻžāĻ•ā§āϝāϟāĻŋāϤ⧇ āϝāĻĻāĻŋ “If he helped me, I ____ the work.” āĻļ⧁āĻĻā§āϧāĻ­āĻžāĻŦ⧇ āĻĒā§‚āϰāĻŖ āĻ•āϰāϤ⧇ āϚāĻžāχ, āϤāĻžāĻšāϞ⧇ “would do” āύāĻŋāϝāĻŧāĻŽ āĻ…āύ⧁āϏāĻžāϰ⧇ āϏāĻ āĻŋāĻ• āωāĻ¤ā§āϤāϰ āĻšāĻŦ⧇āĨ¤ āϕ⧇āύ āϤāĻž āĻŦā§āϝāĻžāĻ–ā§āϝāĻž āĻ•āϰāĻž āĻšāϞ:

1. āĻļāĻ°ā§āϤāĻŽā§‚āϞāĻ• āĻŦāĻžāĻ•ā§āϝ⧇āϰ āϧāϰāύ
āχāĻ‚āϰ⧇āϜāĻŋāϤ⧇ āĻļāĻ°ā§āϤāĻŽā§‚āϞāĻ• (conditional) āĻŦāĻžāĻ•ā§āϝ āϏāĻžāϧāĻžāϰāĻŖāϤ āϤāĻŋāύ āϧāϰāύ⧇āϰ āĻšā§Ÿ:
- āĻĒā§āϰāĻĨāĻŽ āϧāϰāĻŖ: āĻŦāĻžāĻ¸ā§āϤāĻŦ āϏāĻŽā§āĻ­āĻžāĻŦāύāĻž (If he helps me, I will do the work.)
- āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āϧāϰāĻŖ: āĻ•āĻžāĻ˛ā§āĻĒāύāĻŋāĻ• āĻŦāĻž āĻ…āϏāĻŽā§āĻ­āĻŦ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻŦāĻ°ā§āϤāĻŽāĻžāύāĻ•āĻžāϞ⧇āϰ āĻŦāĻž āĻ­āĻŦāĻŋāĻˇā§āϝāϤ⧇āϰ āĻ•āĻžāĻ˛ā§āĻĒāύāĻŋāĻ• āĻ…āĻŦāĻ¸ā§āĻĨāĻž (If he helped me, I would do the work.)
- āϤ⧃āϤ⧀āϝāĻŧ āϧāϰāĻŖ: āĻ…āϤ⧀āϤ⧇āϰ āĻ…āϏāĻŽā§āĻ­āĻŦ āĻŦāĻž āĻ…āύāĻžāĻ—āϤāĻŋāĻ•āĻžāϞ⧀āύ āϘāϟāύāĻž (If he had helped me, I would have done the work.)

2. āϕ⧇āύ “would do” āϏāĻ āĻŋāĻ•?
- āĻāĻ–āĻžāύ⧇ “If he helped me” āĻ…āĻ‚āĻļāϟāĻŋāϤ⧇ “helped” āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ•āϰ⧇ āĻŦā§‹āĻāĻžāύ⧋ āĻšāϝāĻŧ⧇āϛ⧇ āϝ⧇ āĻāϟāĻŋ āĻŦāĻ°ā§āϤāĻŽāĻžāύ āĻŦāĻž āĻ­āĻŦāĻŋāĻˇā§āϝāϤ⧇āϰ āĻāĻ•āϟāĻŋ āĻ•āĻžāĻ˛ā§āĻĒāύāĻŋāĻ• āĻļāĻ°ā§āϤāĨ¤ āĻ…āĻ°ā§āĻĨāĻžā§Ž āϏāĻ¤ā§āϝāĻŋāχ āĻšāϝāĻŧāύāĻŋ āĻŦāĻž āĻšāĻ“āϝāĻŧāĻžāϰ āϏāĻŽā§āĻ­āĻžāĻŦāύāĻž āϖ⧁āĻŦāχ āĻ•āĻŽāĨ¤
- āĻāχ āϧāϰāύ⧇āϰ āĻļāĻ°ā§āϤāĻŦāĻžāĻ•ā§āϝ⧇ āĻŽā§‚āϞ āĻŦāĻžāĻ•ā§āϝ⧇ “would + āĻŽā§‚āϞāĻ•āĻ°ā§āĻŽāĻŦāĻŋāĻļ⧇āĻˇā§āĻ¯â€ (base verb) āĻŦā§āϝāĻŦāĻšā§ƒāϤ āĻšāϝāĻŧāĨ¤ āϤāĻžāχ “I would do the work” āϝ⧁āĻ•ā§āϤ āĻ•āϰ⧇ āĻŦāĻžāĻ•ā§āϝāϟāĻŋ āĻĒ⧁āϰ⧋ āĻšāϝāĻŧāĨ¤

3. āĻ…āĻ¨ā§āϝ āĻļāĻŦā§āĻĻāϗ⧁āϞ⧋āϰ āĻ…āϏāĻ™ā§āĻ—āϤāĻŋ
- “did” āĻŦā§āϝāĻŦāĻšāĻžāϰ⧇ Simple past āϝ⧋āĻ— āĻšāĻŦ⧇, āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻļāĻ°ā§āϤāĻŦāĻžāĻ•ā§āϝ⧇ āĻāχ āĻĢāĻ°ā§āĻŽ āĻ•āĻžāϜ āĻĻ⧇āϝāĻŧ āύāĻžāĨ¤
- “do” āĻŦā§āϝāĻŦāĻšāĻžāϰ⧇ āĻŦāĻ°ā§āϤāĻŽāĻžāύāĻ•āĻžāϞ⧀āύ āĻŦāĻžāĻ¸ā§āϤāĻŦ āϏāĻŽā§āĻ­āĻžāĻŦāύāĻž āĻŦā§‹āĻāĻžāϤ⧇ āĻĒāĻžāϰ⧇, āϤāĻŦ⧇ āĻāĻ–āĻžāύ⧇ “helped” (past tense) āĻāϰ āϏāĻ™ā§āϗ⧇ āĻŽāĻŋāϞāϛ⧇ āύāĻžāĨ¤
- “would have done” āĻšāϞ⧇ āĻ…āϤ⧀āϤ⧇āϰ āĻ…āϏāĻŽā§āĻ­āĻŦ āϘāϟāύāĻžāϰ āĻ•āĻĨāĻž āĻŦāϞāĻž āĻšāĻŦ⧇ (“If he had helped meâ€Ļ”), āϝāĻž āĻļāĻ°ā§āϤ⧇āϰ āϏāĻŽāϝāĻŧāĻ•āĻžāϞ⧇āϰ āϏāĻ™ā§āϗ⧇ āϏāĻžāĻŽāĻžā§āϜāĻ¸ā§āϝāĻĒā§‚āĻ°ā§āĻŖ āύāϝāĻŧāĨ¤

4. āĻŦāĻžāĻ•ā§āϝāĻ—āĻ āύ
āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āĻŦāĻžāĻ•ā§āϝ āĻšāĻŦ⧇:
“If he helped me, I would do the work.”
āĻ…āĻ°ā§āĻĨāĻžā§Ž, “āϝāĻĻāĻŋ āϏ⧇ āφāĻŽāĻžāϕ⧇ āϏāĻžāĻšāĻžāĻ¯ā§āϝ āĻ•āϰāϤ⧋, āφāĻŽāĻŋ āϏ⧇āχ āĻ•āĻžāϜāϟāĻŋ āĻ•āϰāϤāĻžāĻŽāĨ¤â€

āϏāĻžāϰāĻžāĻ‚āĻļ
- āĻļāĻ°ā§āϤāĻŦāĻžāĻ•ā§āϝ⧇āϰ āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āϧāϰāϪ⧇ “if + past simple” āĻ“ “would + base verb” āĻŦā§āϝāĻŦāĻšā§ƒāϤ āĻšāϝāĻŧāĨ¤
- “would do” āĻŦā§āϝāĻŦāĻšāĻžāϰ⧇ āĻŦāĻ°ā§āϤāĻŽāĻžāύ āĻŦāĻž āĻ­āĻŦāĻŋāĻˇā§āϝāϤ⧇āϰ āĻ•āĻžāĻ˛ā§āĻĒāύāĻŋāĻ• āϘāϟāύāĻžāϰ āĻ•āĻĨāĻž āĻŦā§‹āĻāĻžāύ⧋ āĻšāϝāĻŧāĨ¤
- āĻŦāĻžāĻ•ā§āϝ⧇āϰ āϏāĻ āĻŋāĻ• āĻŽā§‡āϞāĻžāϰ āϜāĻ¨ā§āϝāĻ“ “would do” āύāĻžāĻŽāĻŽāĻžāĻ¤ā§āϰāϤāĻŽāĨ¤

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