whatisthis什么意思,this读音

(湘少版2014)三年级英语下册课件 unit 3 what colour is this
湘少版三年级英语unit3_what_colour_is_this_balloon
guess: what is this? it is…… what is =what's what's this?
七年级上册 starter unit3 what_color_is_it what's this?
语调 ——what's this? ——this is desk. ——is this desk?