All of these can be said. It just depends on HOW you wish to say it. If you say "I do like to write a book," then it would be best said after someone says something in regards to books. When you use 'do,' you sort of confirm something.
Johnnie: Do you like to write books!
Me: Actually, I do like to write books! (as if being said in wonder and amazement)
Or. . .
Johnnie: You hate writing books, right?
Me: Well, no. Actually, I do like to write! (said in defiance or objection)
Yeah you are right. What happens is: Some verbs can be used with prepositions or not. They call it Gerund and Infinitive.
When I have to write:
"I am writing ..." or "I write ..."?
its depend.. what time do u use.??.. if u going to use "to write" now... is with "ing" (presente continuous) but .. if is a action that u used..always..and u want to say that ( presente simple) is "write."...Well I hopte that u understand me hhaha.xD
'I am writing' is used when the action is being done 'NOW':
'What are you doing with that pen and paper?' 'I am writing a book'. (They are writing as they are talking)
OR when writing is the action IN PROGRESS so it's been started and it's an action continuing into the present.
'What is your job?' 'I am a writer. I am writing an exciting book'. (They may not be writing on paper at that time but they're discussing an action which is still going on - he hasn't FINISHED writing the book.
'I write' is used to describe habit or what happens IF IT HAPPENS AT ALL.
'Do you like writing?' 'Yes, everyday I write to my father.'
'What type of books do you write?' 'I write fiction books.'
Hope this helps :)
I am writing
i am writing a note (i am writing at the moment
i write note (i always write notes it is like a habbit
Both are correct.
I am writing a letter for my friend.
Every day I write a letter for my girlfriend.
i think that present continuous