Stack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It only takes a minute to sign up.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Should it be pronounced as /z/ or /s/ ?
It's is pronounced like the z in zebra.
When have means "to be obligated or forced to do X", the pronunciation can change. The v in have can be pronounced like the f in fly, and the s in has can be pronounced like the s in sand.
It should be pronounced /z/.
Normally when an "s" initiates a word or syllable, it is pronounced /s/, and when the word or syllable ends in "s" it is pronounced as /z/.