为什么in the last few months 中 few前面不加a

in the last few in the last few days为什么用last? in the last few years 为什么要加 the in the last days用不用加few为什么 为什么in the last few months 中 few前面不加a in the last few years是什么时态 he's really-----------------( experience) a lot in the last in the last few years填什么,为什么填这个单词? 1 on the last few day 还是in the last few day（s） 还是on the last few days in the last few years为什么翻译成在过去的几年里呢?few years是几年的意思,那in the last了?希望详解. in the last few years还是in the last few yearRT China _____changed a lot in the last few years.A have B has 选什么?为什么? 为什么 in the last few years 用完成时态一般都直接说它是标志词 IN the last few years Beijing ()greatly Ahas changed Bhas been changed为什么不选择b? I have liked math class in the last few years.这句子为什么不对? in the past few years 过去完成时 in the last few years 现在完成时 in the past 一般过去时 for the last few years和 in the last few years的区别 i'd had reson enough in the last few months.如何理解last?如何理解few? in the last few years=over the years吗