he looks younger ,but he is older than me -three years.A,since B,for C,about D,by

问题描述:

he looks younger ,but he is older than me -three years.
A,since B,for C,about D,by

C

B

答案是 D
by+数词 表示增加/多或减少/少的量
例如:Your pencil is longer than mine by 3 inches.
You are taller than me by 3 centimeters(cm).

选C

选D [他看起来很年轻,但他比我大三岁.]
注释:by可表示“(数量或程度)达到”,用于数词前.
又如:They overcharged me by 3 dollars.他们多收了我3美元.