Question

while changing direct into indirect simple tenses changes to what​

Answer 1

Answer:

When the reporting verb of direct speech is in past tense then all the present tenses are changed to the corresponding past tense in indirect speech.

Answer 2

Answer:

While changing direct to indirect:

Simple Present Tense = Simple Past tense

Present Continuous Tense = Past Continuous Tense

Present Perfect = Past Perfect

Present Perfect Continuous Tense = Past perfect continuous tense

Simple past tense = Past perfect tense

Past Continuous Tense = Past perfect Continuous tense