think a lot of
Also, think highly or well or the world of. Have a good opinion of, regard very favorably, as in I think a lot of my daughter-in-law, or He didn't think highly of this company, or Dean thought the world of his youngest. These expressions use think in the sense of “regard” or “value,” a usage dating from the late 1300s. For antonyms, see not think much of; think little of.