Maybe there will be a heavy rain变为同义句

Maybe there will be a heavy rain变为同义句

Maybe there will be a heavy rain.
同义句：
Perhaps it is going to rain heavily.
不明白可继续提问,
再问： 可要求是变为There_________a heavy rain.
再答： There__might be_______a heavy rain. 两个空的话就这么填。
再问： 可要求是变为There_________a heavy rain.
再答： 几个空？至少应该有两个空吧。 There__may be_______a heavy rain. 或：There__might be_______a heavy rain.