I am busy doing my homework 用的是什么语法形式

I am busy doing my homework 用的是什么语法形式 分析一下句中的语法,比如：I am busy doing my homework.be busy doing sth:忙 I am busy __(do)my homework. I am doing my homework.变成一般疑问句是什么? i am doing my homework,bye英语翻译 I am doing my homework ( r ) now Am i doing my homework at home? I am doing my homework now 划线部分提问(划的是doing homework) I'm busy doing my homework 对doing my homework 提问 (1)i am busy with my homework . 的同义句是? (2)this is my family i'm doing homework and i'm doing my homework 是一样的吗?两者语法上有区别吗 i'm doing homework 和 i'm doing my homework 是不是一样的意思,语法上有什么不同