present perfect

noun

1. 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

1. 现在完成时的
   In grammar, the present perfect tenses 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'.

1. Here have is the auxiliary verb and completed is the main verb; have completed is the present perfect tense.
   在这里have是辅助动词而completed是主要动词，havecompleted是现在完成时。
2. The question is in the present perfect continuous so you will answer with the verb in the continuous.
   这个问题是用现在完成进行时来提问的，所以回答时也用进行时态的这个动词。
3. 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。
4. 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；
5. And will learn The simple past tense, The present perfect tense, The past perfect tense as well as The future tense.
   这个学期，我们学到了过去时，现在完成时，过去完成时和将来时等。
6. Rewrite the following sentences using the Present Perfect Passive Voice.
   用现在完成时的被动语态改写下列句子。
7. 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？
8. ` I have finished 'is an example of the present perfect.
   我已经完成了是现在完成时态的一个例句。
9. We also use the present perfect to talk about repeated actions in the past.
   我们还使用此时态谈论过去重复的动作。
10. 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。
11. 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。
12. They were all concerning about the past tense and the present perfect.
    那些练习题都是跟一般过去时和现在完成时有关的。
13. As one of the most important and confusing grammatical tenses in high-school English, present perfect tense brings about much perplexity to both teachers and students.
    现在完成时态是中学英语语法中的重点和难点，经常给师生带来困惑。
14. 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。
15. 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。
16. We also use the present perfect to talk about a series of repeated actions which have happened up to the present.
    我们也使用现在完成时谈论一系列重复的行为，这些行为到现在还发生。
17. You'll be able to use the present perfect tense for checking up.
    你可以用现在进行时态去检查。
18. They appear more excited when we talk about university life in the United States than when we discuss the correct usage of the present perfect tense.
    与讨论如何正确使用现在完成时相比，当我们谈起美国大学的生活时，他们显得更为兴奋。
19. By combining theories and experiment, this thesis compares and analyzes the features in the process of learning English present perfect by both Chinese Han students and Chinese ethnic Korean students.
    本文通过理论和实验相结合的方法，对比分析单、双语人学习英语现在完成体的特征。
20. When talking about current employment be careful to use the present perfect or present perfect continuous.
    谈起目前的就业要小心使用现在时。
21. Talk about the uses of the present perfect tense.
    表示过去发生的事对现在仍有影响。
22. 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。
23. When we talk about past events which have no present importance, we do not use the present perfect.
    谈论过去的事件其对现在不重要，不用现在完成时。
24. 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。
25. In this lesson, we will practice using the present perfect tense.
    在这节课上，我们将要练习使用现在完成式。
26. When we want to talk about actions or situations which started in the past and have continued up to the present, we often use the present perfect to show the connection between past and present.
    要谈论行为或状态其始于过去而持续到现在，经常使用现在完成时表现过去和现在之间的连接。
27. It is not easy to learn to use the present perfect tense correctly.
    学习正确使用现在完成时不是容易的事。
28. The present perfect simple is often used to talk about past actions and events which are completely finished.
    一般现在完成时经常用于谈论过去的行为和事件其完全结束。
29. Use the present perfect to inquire about life experiences.
    使用现在完成时访问生活经历。
30. The present perfect is almost a kind of present tense.
    现在完成时总是一类现在时态。

noun

1. 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