I am writing中am的作用

I am writing中am的作用 Am I writing a letter?的反义疑问句是什么? I am writing a letter是什么意思 I am not writing a letter.改错、 I am writing a letter.提问： Are you listening or writing这句话的答安选Yes,I am.I am listening NO,I am not writingAre you listening or writing这句话的答安选Yes,I am.I am listening NO,I am not writing还是 I am listening and writing为什么 I am writing a letter.这里的writing是及物动词还是动名词啊? 现在完成进行时态与现在进行时态的区别是什么?例如i have been writing a letter和i am writing a letter例如i have been writing a letter和i am writing a letter有什么区别 I am writing t______ my friend,Rose, says kate.中应该填什么 I am writing letters now.这句话里能不能把now放在I的前面? i am writing to suggest that这个表达对吗 I am not good at writing.改为同义句 I am writing a letter you in my school为什么 writing,my,i,a,father,letter,to,am 排句 I am busy writing a novel.是什么句型 I am writing a report now.改为一般疑问句 i am writing to in quire opportunities for 求翻译 I am writing to tell you about what I am doing in