The 'discover' groupThese verbs are concerned with finding out how to do something or whether to do something.
With most of the verbs in this group the to-infinitive is most frequently introduced by how.
ask assess calculate check determine discover establish guess investigate learn see think figure out find out puzzle out weigh up work out
Japanese aid will pay for technicians to assess how to control pollution from the coal-fired plant.
The computer calculates how to move each individual joint of each finger, and the joints in the arm.
In every library and bookshop there's a mass of information if you want to find out what to do for your children.
The US Environmental Protection Agency is investigating whether to make these tests compulsory.
The team boss was weighing up what to do about the drastic rule changes.