In the past years,there （ ）great changes in my hometown 填 have been还是were 我要理由 为什么为什么要用现在完成时 他是过去发生了变化了啊

in the past few years in the past two years Great changes have taken place in my hometown in the past few years=my hometown___ ___ ___ ___in th in the past few years造句 in the past two years 是什么时态 in the past two years事态 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 in the past three years 还是 in the three years past?哪个正确? 在过去的五年里 in the past five years还是in past five years 为什么是in the past three years而不是over the past three years over the past twenty years 还是in the past twenty years in the past two years和over the past two years有什么区别? During the past two years与in the past two years区别 in the past 5 years 跟 for the past 5 years RT in the past 3 years 和 over the past 3 years的区别 There( ) great changes in Shanghai in the past few years. in the past in the past few years in the last 30 years 各用什么时态? work alone ,imagine you are years old .write a flow chart of your life from the time you were bornup to your 30th birthday.when you write adout past time ,remember to put the verbs in the past tense