I have some idea.的idea是加s还是不加s呢

I have some idea.的idea是加s还是不加s呢 I have an idea.那如果在 idea 面前加个 great ,那 idea 面前该加 a 还是 an idea可数与不可数在Do you have some idea(s)?中,idea是可数名词（c）还是不可数名词(u) i think it's a good idea.这句是对的吗,是要在it前面加that吗,或者i think it a I have some newspaper（s） 要加s吗 actually,i have no idea what's this for. I have some idea 为什么不是ideas? I have no idea( )he will win.是填whether还是that?如果改成I have some let's have a rest shall we?回答应是good idea 还是yes ,let's go what's real?what's true?what's love?I have no idea to slove I have a good idea! 是什么意思呢 i don't have any banana,but i have some peach为什么后面不要加es和s呢?