perfect tense造句

• The verb must be in the present perfect tense
  动词必须用现在完成时态。
• " recently " has the widest use , in positive and negative statements and questions , with the past tense and the present perfect tense
  “recently”用法最广，可用于肯定式陈述句、否定式陈述句及疑问句中，与过去时态和现在完成时态连用。
• To grasp the usage of the present perfect tense
  掌握现在完成时态的用法
• Past future perfect tense
  过去将来完成时
• Let me try to help you understand . perfect tense shows relative time between events
  完成时表示的是事情之间的时间关系：
• Past perfect tense is used to say that one past event happened before another
  过去完成时指的是事情发生在过去的时间之前。
• The perfect tense
  完成式完成时态
• Present perfect tense
  过去完成时
• Future perfect tense
  将来完成时
• Past perfect tense
  现在完成时
• We have encountered not a few students learning the english language who have the same problem understanding perfect tense
  我们遇到了很多与你有相同困惑的学生。我可以帮帮你。
• The present perfect tense is always connected with present time ， hence it is net used with “ yesterday ” ， “ last year ” ， etc
  现在完成时总是和现在有关，所以它不能和“昨天” 、 “去年”等一起用。
• Present perfect tense is used for an action at an unspecified time in the past , or an action continuing until now
  现在完成时指的是在过去某个不确定的时间发生的事情，或者是一直持续到现在的动作
• When you ask about something that started in the past but continues to the present time , you use the present perfect tense , e . g
  当你谈论在过去开始但是一直持续到现在的某事时，用现在完成时态，例如
• " recently " has the widest use , in positive and negative statements and questions , with the past tense and the present perfect tense
  “ recently ”用法最广，可用于肯定式陈述句、否定式陈述句及疑问句中，与过去时态和现在完成时态连用。