...子就失去了联系。这里的mother and son(母子)前面没有用冠词,好像原来见过,father and son(父子)也不用冠词的,这是一种习惯吗?如果是 mother and daughter(母女)、brother and sister(兄妹)等呢?也一样吗?还有 teacher and student...
If
you are planning to start a career in the field of education, science, or
culture, then an internship (实习) at UNESCO will be ideal for you.这是2021年高考英语北京卷阅读A中的一个句子。请问专家:UNESCO前面为什么不用冠词?