爱中爱帼
答案:been in,on business. 首先通过中英文句子的比对,可知英文句子中缺少"去北京出差"的表达.短语"出差"的英文表达是:on business,根据时间状语for two weeks 判断用现在完成时,且谓语动词必须是可延续性动词,现在完成时的构成是:主语+have/has+动词的过去分词;所以此处的"去北京"用be in Beijing,故答案为:been in,on business
默灬小米
您好,领学网为您解答:我爸经常去北京出差:My father often goes to Beijing on business.重点词汇 经常often; frequently; regularly; day-to-day北京Beijing; Peking (capital of the People's Republic of China)出差be away on official business; be travel on official business望采纳!
优质英语培训问答知识库