I am sleeping为什么结尾不直接用SLEEP而要加ING那?

I am sleeping为什么结尾不直接用SLEEP而要加ING那? He always sleeps late on Sundays.I am sure he ____ when we get home A is still sleeping B will still be sleeping为什么选B不选A When I am sleeping怎么读快 I am not the only sleeping! I am sleep是什么时态.I am sleeping是什么时态. Carol is very funny ,and more outgoing than i am.结尾为什么用i am 翻译一下I'm sorry I am sleeping I am very tried ,I want to sleeping.是什么意思 I am not sleeping in bed.bed.不加冠词 He is reading the newspaper.the newspaper 加冠词 I am not feeling___today,Maybe I need moreAwell,sleeping Bgood,sleeping Cwell,sleep Dgood,sleep I am feeling tired and之后用sleepy or sleeping I stopped him from sleeping.为什么不直接用stop,而要加上ped,变成stopped 为什么“i am what i am 不大写?“i”为什么不大写?这是锐步的广告语 Carol is very funny ,and more outgoing than i am.结尾为什么用i am不用me I am going to be alone my whole life,aren't I.为什么结尾是aren't i 英语翻译I have a problem sleeping at night此句中为什么用sleeping I can see some bees sleeping in the tree中的sleeping可以换成sleep么?为什么? What a sleeping beauty!能不能用asleep代替sleeping 为什么?两个都是形容词的