Do native people pronounce "it is on the table" as "ɪt sɑːn ðə ˈteɪbl" or "ɪt zɑːn ðə ˈteɪbl"?

Sometimes, when I watch American films, I often hear people say "ɪt zɑːn ðə ˈteɪbl" (it is on the table).

I learned in textbook that "it is" can be contracted as "it's" and since "t" is voiceless so we have to pronounce "it's" as "ɪts" not "ɪtz".

But people, especially American ones often say "ɪt zɑːn ðə ˈteɪbl" (it is on the table).

Then I checked the dictionary

is

UK strong /ɪz/ weak /z/ /s/ US strong /ɪz/ weak /z/ /s/

So I guessed that there is no contraction in the sentence "it is on the table", people pronounce it as "ɪt zɑːn ðə ˈteɪbl" and /z/ is the weak form of "is".

did I guess right?

Solution 1:

In American English we would pronounce "it is on" as /ɪɾɪzɑːn/ or /ɪdɪzɑːn/, and "it's on" as /ɪtsɑːn/ or /ɪdzɑːn/. /tz/ is not present in any dialect of American English, and if you think you're hearing it, you're almost certainly actually hearing /dz/, /ts/, or /t z/; in the latter case, the /t/ comes at the end of a word and /z/ at the beginning of another word. This is because consonant clusters must have uniform voicing in American English.