【题目】Some parts in South China have experienced ________this year as they did last year．
A.rain twice as much
B.twice as much rain
C.as twice much rain
D.twice rain as much

【答案】B
【解析】句意：今年中国南方的一些地区已经经历的降雨是去年的两倍。 倍数表达法之一：倍数＋as＋形容词/副词原级＋as ...。据此句型可知A、C、D不对，故选B.