He said, "I will call you tomorrow."
"He said he would call me tomorrow"
You’re 100% sure about something that will happen.
"I’m certain it will happen"
Form used to talk about planned future events.
"be going to"?
Conditional type used for real and possible situations in the present or future.
"the first conditional"
"I can help you with your homework," she told me.
"She told me she could help me with my homework"
You’re 75% sure that something is true in the present.
"It must be true"
Future form used for decisions made at the moment of speaking.
"will"
"If it rains tomorrow, we’ll cancel the picnic."
"the first conditional"
"Where did you go last weekend?" she asked him.
"She asked him where he had gone the previous weekend"
You’re 50% sure about something in the future.
"It might happen"
Form used to talk about fixed future schedules.
"the present simple"
"If I had studied harder, I would have passed the exam."
"the third conditional"
"Why are you late?" the teacher asked.
"The teacher asked why I was late"
You’re 25% sure about an event that occurred in the past.
"It could have happened"
Form used to talk about actions that will be in progress at a specific time in the future.
"the future continuous"
Conditional type used for hypothetical situations in the present.
"the second conditional"
"Do you understand the instructions?" he asked.
"He asked if I understood the instructions"
You’re almost sure something didn’t happen in the past (90% certainty).
"It couldn’t have happened"
Form used to express something that will have been completed by a certain time in the future.
"the future perfect"
"If she had arrived earlier, she could be at the meeting right now."
"the mixed conditional"