[译] 来的人超过我们预料的人数的两倍。
[误] We got twice as many people as we expected.

[正] We got three times as many people as we expected.
[注] twice 可以与 as... as... 的结构连用, 但表示的意义是"是……的两倍, 比……大一倍"。如果表示"超过……的两倍", 就应将 twice 改成 three times.