present perfect

英 [ˌpreznt ˈpɜːfɪkt]

美 [ˌpreznt ˈpɜːrfɪkt]

n.  现在完成时

牛津词典

noun

• 现在完成时
  the form of a verb that expresses an action done in a time period up to the present, formed in English with the present tense of have and the past participle of the verb, as in I have eaten

柯林斯词典

• 现在完成时的
  In grammar, thepresent perfecttenses of a verb are the ones used to talk about things which happened before the time you are speaking or writing but are relevant to the present situation, or things that began in the past and are still happening. The simple present perfect tense uses 'have' or 'has' and the past participle of the verb, as in 'They have decided what to do'.

英英释义

noun

• a perfective tense used to express action completed in the present
  1. `I have finished' is an example of the present perfect
  Synonym:present perfect tense

双语例句

• We use the present perfect tense to talk about something that happened at an indefinite time in the past.
  我们使用现在完成时谈论发生在过去某个不确定的时间的事情。
• There is no exactly equivalent French tense to the present perfect tense in English.
  法语里没有和英语中的现在完成时完全对应的时态。
• The present perfect tense emphasizes the effect of the past action on the present.
  现在完成式强调过去所发生的事情对现在的影响。
• Can you pick out more than two sentences in the present perfect voice from the reading passage?
  你能在文章中找出两个以上与现在完成时的被动态有关的句型么？
• Fill in the blanks with the present perfect tense of the verbs in brackets.
  用括号里动词的现在完成时态来填充空格。
• Change these sentences into the Present Perfect Passive, putting the verbs into the correct forms.
  用动词的正确形式将下面的句子变成现在完成时的被动语态。
• Talk about the uses of the present perfect tense.
  表示过去发生的事对现在仍有影响。
• To grasp the Present Perfect and the Irregular verbs 'past tense& past participle tense.
  掌握现在完成时态以及不规则动词的过去时态和过去分词。
• The differences between the present perfect and the past simple are complicated and difficult to analyse, and the rules given in grammars are not always very clear or accurate.
  现在完成时和过去时之间的差别分析起来有点复杂和困难，语法的已知规则总不是很明白或精确。在许多欧洲语言里，有现在完成时态；
• Remember: when using the words'since'and'for'with the present perfect tense, you must follow them with different information.
  在这个单元，我们学习了不同的现在时态来强调不同事件的状态。