have another think coming
To be deluded, to be mistaken; to need to rethink something one has determined; to need to reconsider one's plans or expectations.
If you think you're going to marry my daughter, you have another think coming.
ADJ
long | hard
VERB + THINK
give sth, have
PREP
~ about
She needs to have a serious think about whether she wants to change jobs.
ADV
really
personally
I personally think that learning a new language takes time and patience.
honestly
I honestly think you should apply for that job because you're qualified.
never
I never thought learning a new language would actually be this enjoyable.
VERB + THINK
be inclined to
I'd be inclined to think that starting the project next week would be better.
PREP
about
She thinks about her future career every time she studies for exams.
of
My children always think of their grandmother whenever they visit the park.
ADV
suddenly
PREP
of
When I woke up this morning, I thought of you and wondered how you were doing.
ADV
carefully, deeply, (long and) hard
He thought carefully about whether to change jobs or stay with his company.
fleetingly
rationally
When you're angry, it's hard to think rationally about what happened.
frantically
She frantically thought about where she could have left her passport before the flight.
contemptuously, despairingly, dully, glumly, grimly, guiltily, indignantly, irritably, miserably, resentfully | ruefully, wistfully, wryly
VERB + THINK
dread to, hate to, shudder to, tremble to
I dread to think how much money we wasted on that broken car.
PREP
about
She spent the afternoon thinking about her job interview tomorrow.
of
She thinks of her grandmother whenever she smells roses.