It's uncertain____side effect the medicine will bring about.,although about two thousand patientsIt's uncertain____side effect the medicine will bring about,although about two thousand patients have taken it答案是what,我想知道为什么不能

It's uncertain____side effect the medicine will bring about.,although about two thousand patientsIt's uncertain____side effect the medicine will bring about,although about two thousand patients have taken it答案是what,我想知道为什么不能
It's uncertain____side effect the medicine will bring about.,although about two thousand patients
It's uncertain____side effect the medicine will bring about,although about two thousand patients have taken it
答案是what,
我想知道为什么不能用whether,

It's uncertain____side effect the medicine will bring about.,although about two thousand patientsIt's uncertain____side effect the medicine will bring about,although about two thousand patients have taken it答案是what,我想知道为什么不能
what充当从句中的宾语,可以把从句调整为the medicine will bring about what side effect .

whether是是否的意思 这句话翻译为它是不确定的带来什么样的影响，而不是意为是否 ，所填的 what在这里有意义 是指什么样的side effect