Americanseatvegetablesperpersontodayastheydidin1910.A.morethantwiceB.astwiceasmanyC.twiceasmanyasD.morethantwiceasmany解释一下其他的为什么错.

Question

Americans eat_____ vegetables per person today as they did in 1910.
A.more than twice B.as twice as many C.twice as many as D.more than twice as many
解释一下其他的为什么错.

Answer 1

选C.
从整个句意上理解,就是美国人现在每人吃的蔬菜是1910年每人吃的两倍.
A选项的话,句意不通.
B选项的结构不对.
D选项的结构应该在many后再加个as
下面是我找的资料,你觉得有必要的话,可以看一下.毕竟一个知识点还是统统弄清楚比较好.
英语倍数的表达法
用形容词表示甲是乙的几倍时,用下面三个句型
（1）……倍数+形容词（或副词）的比较级+than
This rope is twice longer than that one．这根绳的长度是那根绳的三倍.（比那根绳长二倍）
This hall is five times bigger than our classroom．这个大厅比我们的教室大五倍.（是我们教室的六倍）
The car runs twice faster than that truck．这辆小车的速度比那辆卡车快两倍.（是那辆卡车的三倍）
（2）……倍数+as+形容词（或 much）或副词+as
Asia is four times as large as Europe．亚洲的面积是欧洲的四倍.
This big stone is three times as heavy as that one．这块大石头的重量是那一块的三倍.（这块石头比那块重二倍）
The plane flew ten times as high as the kite．那架飞机飞行高度是那个风筝的十倍.（高出九倍）
（3）……倍数+the size（length,height…）of
This street is four times the length of that street．这条街是那条街的四倍长.
This hill is four times the height of that small one．这座山的高度是那座小山的四倍.（比那座小山高三倍）
也可用：The height of this hill is four times that of that small one．