He was fearful 'to the extent that' he refused to leave his house. [=he was so fearful that he refused to leave his house]
This new tax affects everyone 'to a greater or lesser extent'. [=it affects some people more than it does other people]
He studied only 'to the extent that' was required to pass the exam. [=he studied just enough to pass the exam]
(..) in the presence of her ruby lips. Oh, my. - Back off, Sheldon. - What? If you do not stop hitting on my lady, you will feel the full extent of my wrath. I'm not hitting on her. And I am not your lady. And you have no wrath. You are my lady. Our parents said so. We are, for all purposes, (..)2007 TvShow: The Big Bang Theory Title: The Grasshopper Experiment Season: 1 Episode 8