My father … on the floor — choose the word or group of words that best completes each of the following…

Analyze the question The sentence is "My father ___ on the floor." We need the correct verb form. The confusion is between lie and lay, plus subject-verb agreement.

Explain the concept

Lie (to recline) is intransitive, meaning it takes no object. Its forms are:

• lie → lay → lain (past participle)

Lay (to put something down) is transitive, meaning it needs an object. Its forms are:

• lay → laid → laid

Lie (to tell a falsehood) has the forms lie → lied → lied.

Solution

1. Subject-verb agreement: "My father" is singular, so it takes has, not have. This eliminates B and C.
2. Meaning: "on the floor" describes a position of reclining, so we need lie (recline), not lie (tell untruths). Its present perfect form is "has lain". "Has lied" would mean he told a falsehood, which does not fit "on the floor".
3. Check A: "has lied on the floor" does not make sense in this context.
4. Check D: "has lain on the floor" means he has been in a reclining position on the floor. This is grammatically correct and makes sense.

Answer: D. has lain

Tip: Ask yourself two questions: (1) Is the subject singular or plural? (has vs have). (2) Is there an object after the verb? If there is no object (as in "on the floor"), use lie, lay, lain. If there is an object ("She laid the book on the table"), use lay, laid, laid.