some strange doubts...

Have you seen Tom?
Are you sure of that?
Do you have a pencil?

What are the possible ways to pronounce the parts in bold? I would say...

Have is always /hæv/ (a as in cat) and the h is never dropped. Or... is something else possible? (like "uh-v", schwa and no h?)

Are is always /ɑr/ (like a stressed "are"). Or... is it possible to say "uh-r", like an unstressed "are"?

Do is usually "D-uh" /də/, with a schwa, or /dʊ/. It is "doo" /du/ when talking really slowly.

You is either /yə/ (y-uh), /yʊ/, or /yu/ (yoo), but I never know what to choose. I think it's usually /yu/ (yoo), unless you are talking really fast and it becomes y-uh /yə/ or moves halfway in between, that is /yʊ/.

What do you think? Thank you in advance. Emotion: smile
You can say [ [email protected] ] for "do you" in that sentence; and [ [email protected] ] for "you", but you always say the "h" in have, and pronounce "are" as /Ar\/.
so, in sentences like those, "Have" is always /hæv/, "Are" is always /ɑr/...
..but what about "Do" and "you"? The vowels can be schwas, but do you think they actually take a variable sound, which can vary from a pure schwa /ə/ to the form they take when they are stressed, /u/?
So "do you" could be /də jə/, or /də jʊ/, or /də ju/, or somewhere in between... do you think it is so? I think it is.
And in the same way, "are you" could be /ɑr jə/, or /ɑr jʊ/, or /ɑr ju/, or somewhere in between...

What do you think?
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Hi, I just tried to pay attention to the vowel in "you" and it seems to me that, in general, /jʊ/ is the most common pronunciation (it is more frequently heard).
Maybe I didn't listen very well, but... that's how I hear it.