First,it is a waste of time ,energy and mony as it does not produce any useful information and products.请问大家,这句话中,,it is a waste of time ,为什么要加一个a,这个a在句子中,怎么翻译呢?首先,它是浪费时间、精力和金钱的这些并列词语中,为什么要家一个a,我特别想不明白。请大家帮帮忙,教教我~~~*^_^*