I will call you now为啥用will am to为啥不行

I will call you now为啥用will am to为啥不行 i will call her now.为什么不可以用i am to call her now i will call you when i am back to Dongguan so you can stay w I will call you I am having a class.I will call you back. i will call you when i am free. Will you teach me how to swim and skate?为啥用and,咋不用or? Jason,Joyce asked you to call her back just now.---OK,I will Alice,you feed bird today,will you?为啥用will you这不是祈使句吧? 为啥选这个?if you don't want to go,neither___为什么答案不是do i,而是will 注 I hope you will accept our offer.hope的词组不是hope to do吗?为啥这里这里 SORRY ,I AM BUSY NOW!I WILL REPLY TO YOU ON MY FREE TIME.中文是