“這” 要發“zhe”, 可是, 你聽過zhei 的音因為 zhei 有點像人家加上去個“一”。
比如我說: “這一個表” this watch, 人家說話的時候有可能把那個zhe跟yi的音混在一起, 變成 zhei 的音。
所以老實說, 中文沒有zhei的音, 可是你還是會聽到哦! :)
Now in English:
When you say zhe, you should be saying a "zhe" sound, but you would have heard zhei before, because sometimes people add an "yi" sound on the end.
For example if I say this watch, it should be "zhe4 ge biao3", but if I wanted to say this "one" watch, it would become "zhe4 yi1 ge biao3", therefore the sound of the yi comes out. They get pushed together and therefore sound like a zhei sound.
So, to be honest, there isn't a zhei sound in Chinese, but you will hear it when there could or might be an "yi" to add.