Overview
Backshift is the process of moving tenses back by one step in reported speech: present simple → past simple, present perfect → past perfect, past simple → past perfect, will → would, can → could, must → had to. Backshift does not apply to past perfect, would, could, should, or might, as these cannot backshift further.
Complete Backshift Table
- present simple →past simple: 'I work' → he said he worked
- present continuous →past continuous: 'I am working' → he was working
- present perfect →past perfect: 'I have finished' → she had finished
- past simple →past perfect: 'I went' → he said he had gone
Modal Backshift
- will →would
- can →could
- may →might
- must →had to (for obligation)
- shall →should
No Change Modals
- These modals do NOT change in reported speech:
- wouldHe said he would come. ✓
- couldShe said she could drive. ✓
- shouldHe said we should wait. ✓
- mightShe said it might rain. ✓
When to use
Writing
He said he would attend the meeting.
News
She told reporters she had resigned.
Study
The student said she had already read the chapter.
Business
The CEO confirmed that profits had increased.