You don't need to change the verb tense.

If the verb is in future you should put it in conditional.

Verbs have to be changed in their corresponding past tense.

If the verb is in past, you should put it in the past perfect

you should write tomorrow in reported speech

You should write the following day in reported speech.

You should write the day before in reported speech.

you should write the day after in reported speech

If you don't know what place is meant.

If it is clear which place is meant

The subject is placed after the auxiliary

The subject is put after the main verb

You don't need to include an auxiliary verb

The word order is the same as the one in a statement.

if there isn't a question word, we can only introduce the reported sentence with if.

if there ins't a question word, we can only introduce the reported sentence with whether

if there isn't a question word, we can introduce the reported sentence with either if or whether

if there isn't a question word, we should put it in the reported sentence.

it is common to use a full infinitive

it is common to use a gerund

it is common to use a that clause

you can't use verbs like advice, remind, command, tell

we should use an auxiliary for negative commands

we should use the word no for negative commands

we should use the word not followed by a full infinitive

we should use the word no followed by a gerund

we can do it by saying he exclaimed that it was a dreadful idea.

we can do it by saying he exclaimed the idea was dreadful

we can do it by saying: he gave an exclamation of disgust

he said how dreadful an idea it is

he swore

he used a swear word

he showed his annoyance by using an imprecation

He said isaid that he was dammed