I did not know if his uncle ----，I think he ---if it does not rain

i didn't know if his uncle will come (or not)
i think he would if it doesn't rain

我不知道如果他的叔叔----, ，我觉得他---如果它不下雨

comes,will我不知道他叔叔是否会来,如果不下雨的话我想他会来的.