Usage of Past Tense or Present Tense is all depends on the topic.
present tense
The present progressive tense of write is:I am writing.You/We/They are writing.He/She/It is writing.
Inappropriate changes would be called "problems with tense." Appropriate use of tense in a literary work involves maintaining the tense throughout the work. If you are writing in the present...verbs are in present tense; if writing in past tense, verbs will be in past tense, etc for future tense.
Wrote is the past tense, written is the past participle, and writing is the present participle.
third person
It should be written in present tense.
Yes, past tense is commonly used in an essay to discuss events, research findings, or literature reviews that have already occurred. It helps maintain a clear and formal tone that is appropriate for academic writing.
I believe the correct tense you would use is present tense.
It depends on what you're writing. If you're writing a novel then it's a common technique for writer's to change tense. For example, if you are primarily writing in present tense, you could switch to past tense when talking about something that happened previously. If you are writing something academic (such as an essay or thesis) then you should try to remain consistent with your tense and not switch. Changing your tenses too often will confuse your reader so be careful.
"Is" is present tense, while "was" is past tense.
True.
It will sometimes change with different styles of writing... but generally: Past: Should have (followed by a past participle) Present: Should Future: Should Note that in older novels, the past tense is sometimes the same as the present.
present tense
writing
Past tense, because the writer read the famous story before writing about it.
present
The present progressive tense of write is:I am writing.You/We/They are writing.He/She/It is writing.