Life has changed a lot last year哪里错

my life has changed a lot中的has changed a lot是什么语啊 My life has changed a lot 划分句子成分 Life has changed a lot last year哪里错 My life has changed a lot!为什么用has而不用 have my life has changed a lot in the last few years为什么是用has changed?这为什么用现在完成时,为什么不是had changed The life we were used to _____ greatly since 1992.A.change B.has changedC.have changed D.changed The country life he was used to____greatly since 1992A.change B.has changed C.changing D.have changed The life people were used to _____ since the earthequake happened in Wenchuan.A changed B.changing C.has changed D.having changed请告知理由谢谢 My life has been changed 和how my life has changed 有什么区别? My life has changed a lot in the l_____ few years 1.The ____________(develop) of science has changed our life a lot. our school life has changed a lot.写一篇英语文章不少于80词. My d_____ life has changed a lot since I entered this new school Since my sister started high schoo,her d_______ life has changed a lot. The country life he was used to ( ) greatly since 1992.A.change B.has changed C.changingThe country life he was used to ( ) greatly since 1992.A.change B.has changed C.changing D.have changed The life we were used to ( )greatly since 1992.A.has changed B.have changed有四个选项,其中两个是：A.has changed B.have changed 老师说选B 但是我觉得应该是A吧,那个The life是不是单数呀,是的话不就是选has changed Our life has changed a lot in the past few years.这句话对吗?亦或Our life has changed a lot in the last few years.(不知应该用has还是应该have?) the life we were used to __ greatly since 1992A.change B.has changed C.changing D.have changed请各位说一哈为什么,