问题补充：
Much to his surprise，he invited only twenty friends to the dinner，but came．
A. twice as many as
B. as many as twice
C. twice as many
D. twice more than
答案：
A. twice as many as
B. as many as twice
(答案→)C. twice as many
D. twice more than
解析：考查倍数表达。倍数表达有四种：1. “A+倍数+形容词或副词的比较级+than+B”， 2.“A+倍数+as+形容词或副词的原级+as+B”， 3. “A+倍数+the size/height/length/width， etc+of+B”， 4. “……times+what从句”。以上的4种情况中，倍数都要放在最前面，故B错误；more than是修饰twice的，要放在twice的前面。故D项错误。本题中提及的是名词friends，故使用many修饰。A项的第二个as是多余的。故C正确。
