Mark: If we leave now, we can catch the train.
Mark said that if we leave now, we can catch the train. (reported simultaneously; we can still catch the train)
Mark said that if we left, we could catch the train. (the reported words are out-of-date; the train has already left)
Jenny: If I got home late, my mom scolded me.
Jenny recalled that if she got home late, her mother used to scold / would scold her.
Catherine: If I lost my job, I would be in serious trouble. (referring to a possible future situation)
Catherine said that if she lost her job, she would be in serious trouble. (the reported words are true; she might still lose her job)
Catherine said that if she had lost her job, she would have been in serious trouble. (the reported words are out-of-date; it's not possible that she will lose her job)
Janet's said, I am shopping with my brother at the shopping center.
Janet said that she was shopping with her brother at the shopping center.
Paul: If I knew the answer, I'd tell you. (referring to an unreal present situation)
Paul said that if he knew the answer, he'd tell us.
Énes said, My brother and I should take the test on Friday.
Énes said that he and his brother should take the test on Friday.
Do we change the tenses when using Third conditionals or WISH / IF ONLY, WOULD RATHER / WOULD SOONER, IT'S (HIGH) TIME, AS IF / AS THOUGH in indirect speech?
No!
Tom: If we had booked our flight earlier, it would have been cheaper.
Tom remarked that if they had booked their flight earlier, it would have been cheaper.
Susan: I wish I lived in the mountains.
Susan said she wished she lived in the mountains.
Charles: If only we hadn't missed the train.
Charles wished they hadn't missed the train.
Carol: I'd rather go by bike than walk.
Carol said that she would rather go by bike than walk.
Mr Wilkins: I would rather you didn't smoke in here.
Mr Wilkins said he would rather I didn't smoke in his office.
Newspaper article: It's high time the government did something about this problem.
The article said that it was high time the government did something about the problem.
Jane: He looks as if he knew the answer.
Jane said that he looked as if he knew the answer.
The students asked, Must we take this test in June?
They asked if they had to take that test in June.