什么时候用double什么时候用twice呢？

EagerBeaver

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

(D)              was more than doubled

(E) had more than doubled

这题的答案选C

但是我记得有一题选的是TWICE

什么时候选double 什么时候选twice 呢？

请赐教～～

lingri88

而且，double可以直接用主动表示，除非有明显的意思说明是被别人给double了，曾经看过一道题用 be doubled，但是很少见，主动较多.

lingri88

increase by two times有歧义，到底是原来的两倍还是三倍呢？ETS正确答案好像避免使用这种讲法的。

twice后面一般用twice as many as或者twice as much as

一家之言，请指教

WalkByFaith

double是动词,用double 比two times 简洁.