correct or not?

I'd say 'not to lie on the table' if they are already sleeping. If they are just going to sleep and looking for an appropriate place for that, I'd use 'not to lie down on the table'.

Hi,

Some students are sleeping in the class. The teacher asks them not to lie down on the table.

Is it correct say 'not lie down on the table'? If you lie down on a table, it suggests that your whole body, eg including your legs and feet, are on it, like a bed. If just your arms and head are on it, I might say 'Don

MyShirleySome students are sleeping in the class. The teacher asks them not to lie down on the table.

Is it correct say 'not lie down on the table'?

Do students there really sleep at school? How old are they?

don't is the word for the negative imperative.

Stand up. Don't stand up.
Lie on the table. Don't lie on the table.
Write down the address. Don't write down the address.

Not lie on the table is not correct.

CJ

And, by the way, you do realize, don't you, that when a person is lying on a table, their entire body is on the table? Did you mean to say, "Don't put your heads on the table"?

CJ

CalifJimdon't is the word for the negative imperative.

Stand up. Don't stand up.
Lie on the table. Don't lie on the table.
Write down the address. Don't write down the address.

Not lie on the table is not correct.

CJ

Yes, but "The teacher asks them not tolie.

A direct negative imperative is not the same (doesn't have the same grammar) as an embedded (indirect) negative imperative. For the direct imperative, use don't. For the embedded imperative, use not to.

The teacher says, "Don't lie on the table!"
The teacher asks them not to lie on the table.

"Don't sit on that bench.

Yeah, he wrote "not to" in the first sentence, but left out "to" in his question... I wasn't reading carefully