摘要:表示到现在为止这一时期中发生的动作或情况.即多次动作的总和. e.g. We have learnt four English songs this month. How many times have you read the novel? For many days we haven't seen each other.

网址:http://m.1010jiajiao.com/timu3_id_2929396[举报]

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网