in the past few years用现在完成时,需不需要用延续性的动词?
in the past few years用现在完成时,需不需要用延续性的动词?
in the past few years是不是现在完成时的标志,现在完成时的标志还有那些?
in the past few years 过去完成时 in the last few years 现在完成时 in t
in the past three years是用过去完成时还是现在完成时?
in the past few years 用什么时态?
in the past few years
in the past in the past few years in the last 30 years 各用什么时
用in the last few years 造三个现在完成时的句子,
in the past few years 为什么只能用于现在完成时不能用于过去式
in the past few years和in the last few years有什么区别,分别用什么时态?
in the past few years和in the last few years的区别,
in the last / past few years的用法