than 2个词性 1,是介词 ,2是连词 这里是连词 fewer than have been killed by bee stings. 可以联想成Only seven people this century have been killed by the great white shark, the man-eater of the movies— than (连接前后2个句子)fewer(fewer 在这里是代词 避免了) have been killed by bee stings. 不知道对否~