Many people agree that---knowledge of English is a must in--

问题描述:

Many people agree that___knowledge of English is a must in___internation trade today.
为什么第一个要填a,第二个不填阿?
1个回答 分类:英语 2014-12-07

问题解答:

我来补答
a knowledge of sth 是固定用法指对于某事的掌握.
第二个空若有冠词则是对于trade的,这里显然不能用a,而the也不对,因为它不是特指某商业交易.internation trade 内贸
 
 
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