1.
present perfect
ph.1. 【语】现在完成时,2. 【语】现在完成时的
2.
`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。
3.
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。
4.
The verb must be in the present perfect tense
动词必须用现在完成时态
5.
He has spoken English for three years since he came to the USA.
（现在完成时，这里说明动作的总和。
6.
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。
7.
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。
8.
Error Analysis of the Present Perfect in Chinese Students English Writings;
中国学生英语写作中的现在完成时错误分析
9.
Effects of linguistic factors on present perfect use;
语言因素对英语现在完成时使用的影响
10.
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。
11.
Study these sentences. Pay close attention to the words in italics.
仔细地研究这些例句，特别注意现在完成时句子中表示时间的状语。
12.
A Research on the Influences of Mongolian Tenses on English Present Perfect Tense Learning among Mongolian College Students;
蒙古语时态对蒙古族大学生学习英语现在完成时的影响研究
13.
The Influence of the Characteristics of Chinese Temporality on the Chinese-speaking Learners Acquisition of English Present Perfect Tense;
论汉语时体特征对中国学生习得英语现在完成时的影响
14.
a perfective tense used to express action completed in the present.
一种用来表达现在已经完成的动作的完成时态。
15.
He has been speaking English since he came to the USA.
（现在完成进行时，强调动作的连续性。
16.
It is too early to say whether he will finish his job.
现在说他是否能完成工作还为时尚早。
17.
A Semantic Study of the English Simple Past Tense and the Present Perfect;
一般过去时和现在完成体的语义研究
18.
The meaning character of the present tense in the present perfect tense;
浅谈现在完成体和现时相关的语义特征