The docter told me to take the medicine________.

问题描述:

The docter told me to take the medicine________.
The docter told me to take the medicine________.
A.every fourth hours B.each fourth hours
C.every four hours D.each four hours
不知道该选择哪个...

  1.every+基数词(大于或等于2)+复数名词 意思是每.例如:  We hand in our homework every three days.我们每三天/每隔两天交一次作业  2.every+序数词(大于或等于2)+单数名词意思是每.例如:  He com...