look用作实义动词和连系动词的两种不同用法.从句意和结构上看：a句中的look  是连系动词(句意为：他看起来很伤心),所以此句用形容词sad作表语.以下各例也涉及实义动词和连系动词的两种用法：1.a.Hearing  this,she  felt  _________.b.I  felt  _________  we  should  take  some  action.A.happy,strong  B.happily,stronglyC.happy,strongly  D.happily,strong2.a.The  dog  is  too  dirty  and  smells  _________.b.The  dog  can’t  be  used  for  hunting,for  he  smells  _________.A.bad,bad  B.badly,badlyC.bad,badly  D.badly,bad3.a.He  worked  very  hard,and  his  dream  came  _________  at  last.b.The  boy  came  ________  to  the  shop  with  the  money  his  mother  gave  him.A.true,happy  B.truly,happilyC.truly,happy  D.true,happily答案：1.C  2.C  3.D  引用地址:
这个look是连系动词还是实义动词