[Grammar] Parts of speech

[2010]

He was only a yard off me – what part of speech is off?
My answer: perposition
The after-effects of the drug are bad. - What part of speech is after?
My answer: noun
Sit down and rest a while. - What part of speech is while?
My answer: perposition
After the storm comes the calm. What part of speech is “after”?
My answer: noun
Please correct me if I am wrong

 

[corum]

He was only a yard off me – what part of speech is off?
My answer: perposition :tick:
The after-effects of the drug are bad. - What part of speech is after?
My answer: noun

(A)fter-effect is a compound noun; "after" pre-modifies "effects" -- adjective-like in function.
Sit down and rest for a while. - What part of speech is while?
My answer: perposition And where is the prepositional complement, IYO? No, it is a noun preceded by a determiner, which also suggests that it is not a preposition but a noun.
After the storm comes the calm. What part of speech is “after”?
My answer: noun

Preposition.

 

[2010]

He was only a yard off me – what part of speech is off?
My answer: perposition :tick:
The after-effects of the drug are bad. - What part of speech is after?
My answer: noun

(A)fter-effect is a compound noun; "after" pre-modifies "effects" -- adjective-like in function.
Sit down and rest for a while. - What part of speech is while?
My answer: perposition And where is the prepositional complement, IYO? No, it is a noun preceded by a determiner, which also suggests that it is not a preposition but a noun.
After the storm comes the calm. What part of speech is “after”?
My answer: noun

Preposition.

Thanks Corum!
And where is the prepositional complement, IYO? No, it is a noun preceded by a determiner, which also suggests that it is not a preposition but a noun. - I don't know to answer this question :-(
Could you please tell me what "IYO" is?

 

[corum]

In "Sit down for a while", "while" is a noun.

I would like to return to the question of "after-effect". It is also written as one word, which means to me that "after" is a prefixum. But this is a morphological term and not a part of speech. IMO, we cannot say that "after" in "aftereffect" belongs to a part of speech because it is embedded in one word, which, in our case, is a noun.

 

[2010]

Could you please tell me what this "IYO" and "IMO" are?

 

[corum]

They are acronyms.

Definitions of acronym - OneLook Dictionary Search

IYO stands for "in your opinion", IMO for "in my opinion". IMHO is also used, in which H means "humble".