补水保湿产品:”我正在写一本书“怎么翻译？

楼主,正确的翻译是:
I am working on a book now.

work on 在口语中就是从事,写做,修理的意思!

额外提示:
继续工作；从事于
continue working;be engaged in
· The builders are still working on the house.
建筑工人们仍在造房子。
· This scientist is known to have been working on this problem for about ten years.
人们知道，这位科学家研究这一问题已达十年之久。

影响；激起
affect;excite
· Wine will work on his emotion.
酒会使他情绪激动。
· This medicine will work on the affected part.
这药能对患部起作用。

努力影响；努力说服
strive to influence or persuade
· She'll work on him to make him change his mind.
她将努力说服他改变主意。

继续工作；从事于
continue working;be engaged in
· The builders are still working on the house.
建筑工人们仍在造房子。
· This scientist is known to have been working on this problem for about ten years.
人们知道，这位科学家研究这一问题已达十年之久。

影响；激起
affect;excite
· Wine will work on his emotion.
酒会使他情绪激动。
· This medicine will work on the affected part.
这药能对患部起作用。

努力影响；努力说服
strive to influence or persuade
· She'll work on him to make him change his mind.
她将努力说服他改变主意。

I am writing a book.

I am writing a book

I'm writing a book now.
前面几人的不对,少了NOW

I am composing a book recently.