REPORTED
SPEECH
HOPES, INTENTIONS, PROMISES
When we report
an intention, hope or promise, we use an appropriate reporting verb
followed by a that-clause or a to-infinitive:
"I'll pay you the
money tomorrow." 
He promised to pay me the money the next day.
He promised that he would pay me the money the next day.
Other verbs used
in this pattern include:
hope,
propose, threaten, guarantee, swear.
Examples:
- "I'll be back
by lunchtime."
He promised
to be back by lunchtime.
He promised that he would
be back by lunchtime.
- "We should arrive
in London before nightfall."
They hoped
to arrive in London before nightfall.
They hoped they would arrive
in London before nightfall.
- "Give me the
keys to the safe or I'll shoot you!"
He threatened
to shoot me if I didn't give him the keys
to the safe.
He threatened that he would
shoot me if I didn't give him the keys to
the safe.
Note: see
also Summary of Reporting Verbs.