1. If the past tense of the sentence adverb of time (eg yesterday, last, week, in 1960), you can not use the present perfect tense, use the past tense.
句子中如有过去时的时间副词（如 yesterday，last，week，in 1960）时，不能使用现在完成时，要用过去时。
2. We can use the past perfect tense to talk about an action that happened before another action in the past.
我们可以用过去完成时态来谈论在过去某个时间之前完成的动作。
3. Able to use past, present and perfect tense to debate.
能用过去时，现在时及将来时，进行简单辩论。
4. And this semester, we have learned the past tense, the past perfect tense and the future tense and so on.
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。
5. perfect tense的反义词
5. The Past Perfect Tense is used to express an action or event that has already happened at a certain time in the past.
过去完成时是用来表达一个动作或者事件在过去的某个特定时间已经发生。
6. We use the past perfect continuous tense to show that an action started in the past and continued up until another time in the past.
我们用过去完成进行时态来形容一个在过去开始的行动，这个行动持续到过去的另一个时间。
7. To introduce the use of past perfect tense to indicate the event happened before a particular time in the past.
Jodie他参加了一个大派对！到底发生了什麼事情呢？是谁在PARTY这麼伤心呢？进来看看吧！
8. When you use a conditional clause with a present or present perfect tense, you
条件从句使用一般现在时或现在完成时，主句也常使用祈使句。
9. Future, you use a present or present perfect tense in the conditional clause, and
主句使用一般将来时，条件从句使用权一般现在时和现在完成时，可用
10. perfect tense的意思
10. The Present Perfect Tense shall be made use ofhave plus the verb of past participle. So I made a mistake here. Even I can figure out some mistakes on grammar（of course, there are some mistakes I can''t find So I revel in making friends with the persons just like the sixth comment the friend have expressed on my mistakes. Bcause of this friend, I think I can improve my English more faster than what I am doing in English now. Or you can add my QQ directly. We can communicate with each other on English. So our knowledge can be improved together. Doesn`t it make sense? .
to challenging不好意思我又用错了这里应该用原型不应该用动名词还有就是上面的完成时have应该加过去分词这里我用了原形所以不对还有我发现了几处语法上的错误所以渴望有能像六楼的朋友那样指出我的错误这样我才能更好的提高英语水平或者直接加我QQ 大家一起交流都是增长彼此的知识的何乐而不为呢？
11. You''ll be able to use the present perfect tense for checking up.
你可以使用现在完成时检查。
12. This paper explores the expression of the perfect tense of the verbs in Putian and Xianyou dialect.
文章探讨莆仙方言动词完成体的表示法。
13. Variationen Grammatik: War, Perfect Tense of Weak and Strong Verbs
语法变化：War，弱变化和强变化动词的完成时态
14. danci.edu.pub
14. 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。
15. 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。
16. 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。
17. 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。
18. perfect tense的意思
18. 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。
19. 公共查询·英语单词
19. 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。
20. 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。