what is与it is的问题

他们的缩略词what's的音标it's是〈wots>< its>加’S的缩略词怎么发音啊？？一种说法是在元音和浊辅音后发[z],在清辅音后发[S].到底是怎么回事啊？那为什么上面的what's与与it's的‘S发音是〈ts>呢？

what is与it is的问题 what it is?/what is it? What is it与what it is的区别？比如用在文章标题：Life, What it is? 这样说正确吗？盼速复，多谢！ what a nice weather it is ! 与 what nice weather it is ! 哪一个是正确的，为什么？ What time is it? What is it????????? what is it? what is IT what is it over guess what it is .