Not Mark, though -- he truly loves people

[Vladimir13]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #590 "Real Life: Personalities (1)", question 8

I can't keep up with Mark. He's so ......... and energetic. He loves to go out and experience the world but, sometimes, I just want to be by myself and relax. Not Mark, though -- he truly loves people and having fun.

(a) outgoing
(b) timid
(c) punctual
(d) picky

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #590 "Real Life: Personalities (1)", answer 8

I can't keep up with Mark. He's so outgoing and energetic. He loves to go out and experience the world but, sometimes, I just want to be by myself and relax. Not Mark, though -- he truly loves people and having fun.

Correct answer: (a) outgoing
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Hi Teachers,

please explain to me what does the last statement mean in relation to previous text? Why "Not Mark, though..." - is it something like excuse before Mark and the obliging author tell us beforehand that Mark is not the reason of his willing?

Thank you,
Vladimir.
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My little horse must think it queer...

[Our Tort System]

Not Mark, though - it doesn't apply to Mark though.

I want to be by myself and relax, but Mark isn't like that - he's outgoing and energetic.
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"He who tries to establish his point by much yelling shows that his reasoning is weak"
-Jodi Ann Arias

[Vladimir13]

Hi Our Tort System,

Thank you for your answer which caused another question, though.

You've written:
Mark isn't like that
and I'm sure in this case:
Mark doesn't like that

As I can see both sentences are correct. Or not?

Thank you,
Vladimir.
_________________
My little horse must think it queer...

[Our Tort System]

"Like" has two meanings:
http://thefreedictionary.com/like

Mark isn't like that - "like" is an adverb here, meaning "he's not that way, he doesn't usually behave in that manner".
Mark doesn't like that - "like" is a verb here, meaning "Mark doesn't appreciate that".
_________________
"He who tries to establish his point by much yelling shows that his reasoning is weak"
-Jodi Ann Arias

[Cristina.ro]