Backshift rules: how tenses change in reported speech
Present → Past | Past → Past Perfect | Will → Would
Same backshift applies to negatives
Same backshift + change to statement word order
💡 Backshift: am/is/are → was/were | have/has → had | will → would | can → could
✓'I love coffee.' → She said she loved coffee.
✗'I love coffee.' → She said she loves coffee.
Present simple → past simple in reported speech.
✓'I have finished.' → He said he had finished.
✗'I have finished.' → He said he has finished.
Present perfect → past perfect.
✓'I will help you.' → She said she would help me.
✗'I will help you.' → She said she will help me.
Will → would in reported speech.