similar as OG4 A survey by the National Council of Churches showed that in 1986 there were 20736 female ministers, almost 9 percent of the nation's clergy, twice s much as 1977. a. twice as much as 1977 b. twice as many as 1977 c. double what it was in 1977 d. double the figure for 1977 e. a number double that of 1977's Answer: D
hope it is helpful to understand the usage of 'double'.
more than double一种固定搭配。其中double是动词, more than修饰动词。
见OG10_72
The number of undergraduate degrees in engineering awarded by colleges and universities in the United States increased by more than twice from 1978 to 1985.
(A) increased by more than twice
(B) increased more than two times
(C) more than doubled (固搭; the number 作为主语,多用double)