hope·ful·ly /ˈhopfəli/
  (ad.)抱有希望地;可以指望
  Hope·ful a.
  1. Full of hope, or agreeable expectation; inclined to hope; expectant.
     Men of their own natural inclination hopeful and strongly conceited.   --Hooker.
  2. Having qualities which excite hope; affording promise of good or of success; as, a hopeful youth; a hopeful prospect. “Hopeful scholars.”
  -- Hope*ful*ly, adv. -- Hope*ful*ness, n.
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  hopefully
       adv 1: with hope; in a hopeful manner; "we searched hopefully for a
              good position" [ant: hopelessly]
       2: it is hoped; "hopefully the weather will be fine on Sunday"