Question

she is writing a book change into past continuous tense​

Answer 1

She was writing a book.

• The given sentence is in the present continuous tense and we have to convert the given sentence into past continuous tense, as mentioned in the question.
• We can transform any sentence into past continuous tense by following the below mentioned pattern :

Subject + was/were + verb with "ing" + Object

• By following the above-mentioned pattern we have converted the given sentence into past continuous tense form.
• The only change that happened in the given sentence is, the change of auxiliary verb "is" into "was".