Lay vs. Lie (vs. Laid)

Grammar Rules: Brian Klems
http://www.writersdigest.com/online-editor/lay-vs-lie?et_mid=585141&rid=...

lay lie Q: In the battle of lay vs. lie, when do you use each and can you provide examples? —Annemarie V.

Don’t forget about “lain,” my friend! All these verbs have two things in common: They begin with the letter “L” and confuse the bejeezus out of many people. But here’s a simple breakdown that will hopefully help you decipher when to use each one and when to use their past-tense equivalents (I’ve also included a handy chart at the end to help, but we’ll get to that later).

Lay

Lay and lie are both present-tense verbs, but they don’t mean quite the same thing. Lay means to put or set something down, so if the subject is acting on an object, it’s “lay.” For example, I lay down the book. You, the subject, set down the book, the object.

Lie

Lie, on the other hand, is defined as, “to be, to stay or to assume rest in a horizontal position,” so the subject is the one doing the lying—I lie down to sleep or When I pick up a copy of my favorite magazine, Writer’s Digest, I lie down to take in all its great information—and not acting on an object. In both these cases, you, the subject, are setting yourself down. Are you with me so far?
I Lie Down vs. Now I Lay Me Down (to Sleep)

To clarify things further, I’ll answer this question that you’re probably wondering: How can you be lying down in your examples while the classic nighttime prayer for kids clearly begins “Now I lay me down to sleep”? You must be out of your mind! It’s true, I’m totally out of my mind, but both the examples I used and the kids’ prayer are correct—and here’s why.

In I lie down to sleep, there is no object to the sentence, just subject (I). In Now I lay me down to sleep, there is a subject (I) and an object (me). Even though the subject and object are one and the same, the object is still present in the sentence, so you must use lay.
Laid vs. Lay vs. Lain

In the past tense, “lay” becomes “laid” (Last week I laid down the law and told her it was inappropriate for her to pick her nose) and “lie” becomes “lay” (Yesterday she lay down for a nap that afternoon and picked her nose anyway). Yes, “lay” is also the past tense of “lie.” And the confusion doesn’t end there.

To throw you for another loop, “laid” is also the past participle form of “lay.” So, when helping verbs are involved, “lay” becomes “laid” and “lie” becomes “lain.” Grandma had laid the chicken in the oven earlier this morning. The chicken had lain there all day until it was cooked all the way through and ready for us to eat.

Remember: Lay and laid both mean to set something down, while lie, lay and lain all mean the subject is setting itself down.

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MY EXPERIENCE: Most ESL/EFL students have a hard time understanding that "lay" is the past tense of "lie" (as in "Yesterday she lay down for a nap...." above).

Nice article on grammar rules.

CIAO!