现在完成时是过去发生并且已经完成的动作对现在造成影响或后果，过去某一时间开始并一向持续到现在并且有可能还会持续的动作或状态。现在完成时的形式是由“havehas+过去分词”构成。
例句一
I’ve seen that film three times。
翻译：那部电影我都看了三遍。
解析：此句的用法与例句三的用法类似。时光段都是指过去到目前为止。只可是，那里的用现在完成时来谈论事件目前为此发生了多少次，可能以后说话人还会再看第四遍或第五遍。
例句二
I’ve lived here since 2005。
翻译：自2005年我就住在那里。
解析：说话人用现在完成时来讨论过去直到现在一段时光里的发生行为或事件。 此处，现在完成时表示过去开始的行为，并没有在过去结束，而是持续到现在。
例句三
I’m not hungry， thanks – I’ve already had dinner。
翻译：我现在不饿，多谢 ——我吃过饭了。
解析: 吃饭这一行为是过去的事，但对现在有影响——说话人现在不饿。在那里，现在完成时描述的是过去发生的事情，现在已经有了结果。
例句四
I’ve been to Beijing。
翻译：我曾去过北京。
解析：说话人的意思是，在他们一生中的某个时刻(从他们出生到现在)，他们去过纽约。他们没有告诉我们确切的时光。这是现在完成时的一个重要用法。用现在完成时来谈论过往经历，而经历事件发生的时光并不重要，可能以后说话人还会去北京。
参考：解惑|如何选择正确过去时：是He did， he was doing， 还是he has done
例句五
Worldrenowned physicist Stephen Hawking has died at the age of 76。
翻译：世界著名物理学家斯蒂芬�霍金去世，享年76岁。
解析：
此处，说话人用现在完成时来表达刚刚发生的事情——宣布新闻。这种行为或事件发生在过去，但它是最近刚刚发生的，并且此行为或事件带来的影响目前仍在。(注意，说话人用现在完成时宣布了这一消息后，随后给出了更多关于这个事件的信息，这时描述这些信息的时态通常会用一般过去时):
have(has)+过去分词的相关例句：
1。现在完成时用来表示现在之前已发生活或完成的动作或状态，但其结果却和现在有联系，也就是说，动作或状态发生在过去但它的影响现在还存在。
I have lost my wallet。(含义是:现在我没有钱花了。)
Michael has been ill。(含义是:现在仍然很虚弱)
Jane has laid the table。(含义是:已能够吃饭了。)
He has returned from abroad。 (含义是:现在已在此地)
2。 现在完成时能够用来表示发生在过去某一时刻的，持续到现在的情景，常与for，since连用。
Mary has been ill for three days。
I have lived here since 1998。
3。 现在完成时往往同表示不确定的过去时光状语连用，如already， yet， just， before， recently， lately等:
He has already obtained a scholarship。
I haven't seen much of him recently (lately)。
We have seen that film before。
Have they found the missing child yet
4。 现在完成时常常与表示频度的时光状语连用，如often， sometimes， ever， never， twice， on several occasion等:
Have you ever been to Beijing
I have never heard Bunny say anything against her。
I have used this pen only three times。 It is still good。
George has met that gentleman on several occasions。
5。 现在完成时还往往能够同包括现在时光在内的时光状语连用，如now， up to these few daysweeksmonthsyears， this morningweekmonthyear， now， just， today， up to present， so far等:
Peter has written six papers so far。
Man has now learned to release energy from the nucleus of the atom。
There has bee too much rain in San Francisco this year。
The friendly relations and cooperation between our two countries have been enhanced in the past few years。
Up to the present everything has been successful。
6。 现在完成时表示现在之前业已完成的动作，虽然其效果或影响仍然存在但已不再继续，可是有一些现在完成时的句子，在后面加上for+一段时光，则现在完成时的动作就表示延续性。
Thomas has studied Russian。 (现在不再学俄语)
Thomas has studied Russian for three years。 (=Thomas began to study Russian three years ago， and is still studying it now。(同第2点用法第一个例句)
7。 现在完成时还能够用来表示过去的一个时光到现在这段时光内重复发生的动作。
We have had four texts this semester。
其他现在完成时的句子选摘：
1、He's gone to Spain。 他去了西班牙。
2、 How long have you worked in this library? 你在这家图书馆工作多久了?
3、Since when have you planted so many young trees?从什么时候开始你种植了这么多小树的？
4、 Has everyone in your class written a letter to a factory to ask them to stop pouring dirty water into the river or lake nearby? 你们班的人有没有给工厂写信让他们停止向附近的河或湖排放污水?
5、I have returned the book I borrowed。我已归还了我借的书。
6、They haven’t finished yet。他们还没结束。
7、Tom has skated for five hours。TOM已经滑冰五个小时了。
8、I just finished reading。我刚读完书。
9、 I’ve just finished reading the book。 我刚读完书。
10、I have bought a new puter。我买了一台新电脑。
11、How many songs has he learned so far?他到目前为止学了多少歌了？
12、We have been waiting for you for half an hour。我们已经等你半个小时了。
13、It's snowy this winter。今年冬天多雪。
14、 I’ve been with Greener China for a year。 我跟随绿色中国一年了。
15、I just had two apples。我刚刚吃了两个苹果。
16、I have done two part-time jobs。我已经做了两份兼职工作。
17、I've been here for two weeks。我已经在那里呆了两周了。
18、 I have already won first prize in the city surfing petition。 我已经在城市的冲浪比赛中获得了第一名。
19、Have you ever been abroad?你出国过吗？
20、 Who has been to Hawaii? None of us has。 谁去过夏威夷?没人去过。
21、 Have I ever picked up some rubbish and thrown it into a dustbin? 我有没有把垃圾捡起来扔进垃圾筒呢?
22、I haven't eaten much chocolate recently。我最近没吃太多巧克力。
23、 After you have finished the questionnaire， you may decide if your friend is doing very well in protecting the environment。 你完成调查问卷后，你能够决定你的朋友是否在保护环境方面做得很好。
24、He has turned off the light。 他已把灯关了。
25、Have you had your lunch yet?你已经吃过午饭了吗?
26、His shoes are dirty。他的鞋子脏了。
27、In the pastyears，there have been great changes in our family life。在过去的十年里，我们的家庭生活发生了很大的变化。
28、I have heard nothing from him up to now。到目前为止我没有他的任何消息。
29、This is my first visit to the city。这是我第一次访问这座城市。
30、I've only been there twice。我只去过那里两次。
31、Has anyone ever skied before?有人之前滑过水吗？
32、He has lived here since 。自从年以来，他一向住在这儿。
33、I've worked in the same job for the pastyears。在过去的年里，我一向在同一个工作岗位工作。
34、He said he knew her very well。他说他很熟悉她。
35、 If your answers are No， it means that you have already helped protect our environment。 如果你的。回答是否，它意味着你已经帮忙保护了我们的环境。
36、How long have you been working in this library?你在这家图书馆工作多久了？
37、We haven't met since then。自那以后我们再没见过。
38、 Have you ever traveled on a plane? 你坐飞机旅行过吗?
39、 How long have you been here in Sydney? 你来悉尼多久了?
40、 I know you’ve e to see your father。 我明白你来看你的爸爸。
41、 Has anybody water-skied before? 有人之前滑过水吗?
42、I think I sent the letter a week ago。我认为我一星期前就把信寄出去了。
43、I just came back from France。我刚从法国回来。
44、 Have I ever planted any trees or flowers in or near my neighbourhood? 我有没有在社区附近种过树或花呢?
45、Have you been to Rome?你已经去了罗马吗？
46、I've played the piano。我已经弹过钢琴了。
47、 He has been in Honolulu ever since。 他从那以后就在檀香山。
48、I’ve just lost my keys。我刚丢了钥匙。
49、 I’ve been surfing every day。 我每一天都冲浪。
50、 Have I ever collected waste paper or bottles for recycling? 我有没有为回收而收集废旧纸张或瓶子呢?
51、I have read the novel。我看过这部小说了。
52、The key she lost was found。她丢失的钥匙找到了。
53、I have been to Singaporetimes。我去过次新加坡。
54、I just turned off the light。我刚刚把灯关上。
55、 Have you ever thrown any litter onto the ground? 你有没有往地上扔过东西?
56、I have found my bag。我已经找到了我的书包。
57、She left home less than a year ago。她离开家还不到一年。
58、I've been learning the new words。我一向在学习新单词。
59、I have never seen him before。以前我从来没有见过他。
60、I have been in the army for more thanyears。我在部队已经呆了五年多了。
61、He is cleaning his shoes。他在清理他的鞋子。
62、Did I pick up the rubbish and throw it into the dustbin?我有没有把垃圾捡起来扔进垃圾筒呢？
63、 What have you done since you joined Greener China? 你加入绿色中国后都做了什么?
64、I have been reading the novel。我一向在看这部小说。
65、 Have you ever been abroad? 你出国过吗?
66、She lost her bike。她把自行车丢了。
67、 You’ve learnt surfing from him， haven’t you? 你从他那里学的滑水，不是吗?
68、I have known him for years。我认识他已经好几年了。
69、 I’ve been here for two weeks already。 我已经在那里呆了两周了。
70、Has your father gone to America? 你的父亲去过美国吗?
71、I have read a book these days。这几天我一向在看一本书。
72、 Have you ever been to Hawaii? 你去过夏威夷吗?
73、I haven't seen Jamie in two months。我两个月没见杰米了。
74、I have owned a puppy before。我以前养过一只小狗。
75、 If your answers are Yes，it means that you have already done something useful to improve the environment。如果你的回答是是，它意味着你已经为保护环境做了些有用的事。
76、We have seen that film。我们已经看过那部电影了。
77、Have you read this book?你已经读了这本书吗？
78、 I’ve never been there。 我从来没去那里。
79、Have you found your pen yet?你已找到你的钢笔了吗?
80、 I’ve already been there twice。 我只去过那里两次。
81、 How many songs has he learned so far? 他到目前为止学了多少歌了?
82、Amy has been playing her radio all morning。艾米整个上午一向开着她的收音机。
83、I had thought I could pass the final examination but I failed。我估计我能够经过期末考试，但结果我没经过。
84、This is the best film I have ever seen。这是我看过的最好的电影。
85、This is the first time I've heard him sing。这是我第一次听他唱歌。
86、 How long have you been a member of Greener China? 你成为绿色中国的一员多久了?
87、She will have finished the book by my next birthday。到我下一个生日为止，她将完成那本书。
88、Gil bought a new puter。吉尔买了一台新电脑。