account for的解释及用法

account for:[ ə'kaunt fɔ:]
说明(原因等)
v.(在数量方面)占
1.He could not account for his absence from school.
他无法说明他旷课的原因.
2.Petrochemicals today account for one fourth of all the chemicals made,in ten years this amount is expected to double.
石油化工产品现在已占所有化学制品的四分之一,十年后预计这个数目还要加倍.
3.The treasurer has to account for the money paid to him.
财务负责人必须说明交给他的钱是怎样用的.
4.He'll have to account for where every cent goes.
他得说明所花掉的每一分钱的用途.
5.He has been asked to account for his conduct.
他被要求解释他的行为.
6.Please account for your disgraceful conduct.
对你的可耻行为请作解释.