02-01 Present Perfect 1

Hello everyone! Welcome back to our channel. Today, we’re diving into the fascinating world of English grammar, specifically the present perfect tense. So, grab your notebooks and let’s get started!

First, let’s talk about the formation of the present perfect tense. The present perfect tense is formed with ‘have’ or ‘has’ plus the past participle of the verb.

Let’s look at some examples: I have cleaned my shoes. It implies “My shoes are clean now.” They have gone out. Which implies “They are not at home now.”

Now, let’s break down the structure. For ‘I’, ‘we’, ‘you’, ‘they’, we use ‘have’. For ‘he’, ‘she’, ‘it’, we use ‘has’. ‘I’, ‘we’, ‘you’, or ‘they’ have cleaned. and ‘he’, ‘she’, or ‘it’ has cleaned.
Next, let’s differentiate between regular and irregular verbs.

Regular verbs have the past participle ending in ‘ed’. For example: clean becomes cleaned, finish becomes finished, and start becomes started. Irregular verbs do not follow this rule.

For example: buy becomes bought, go becomes gone, and see becomes seen.
Now, let’s explore the different situations where we use the present perfect tense.

First, it’s about ‘Experiences’. We use the present perfect tense to talk about experiences or actions that happened at some point in a person’s life, without specifying when they occurred. Example: “I have visited Paris.” Here, the exact time of the visit is not important.

Second, when it’s about ‘Changes Over Time’. This tense is also used to describe changes that have happened over a period of time. Example: “She has grown a lot since I last saw her.”

Also, it could be used to talk about ‘Achievements’. When we talk about accomplishments or completed actions, we use the present perfect. Example: “They have finished their homework.”

Besides, we could use it to talk about ‘Unfinished Actions’. We describe an action that started in the past and continues up to the present.

Example: “I have lived in London for five years.” Which means ‘I still live in London.’

We could also use it for ‘Recent Events’. For example, to describe events that happened recently and are relevant now. Example: “He has just finished his lunch.”

Next, the tense could be used to illustrate ‘Results in the Present’. For example, we can describe past actions with present results.

Example: “I have lost my keys.” Which means ‘I cannot find them now.’

Last, when we talk about ‘Repeated Actions’. We could use it to talk about actions that have happened repeatedly up to the present.

Example: “We have visited that museum several times.”

Here are some additional examples of present perfect usage: For Experiences: “Have you ever ridden a horse?” “She has never been to New York.”

For Changes Over Time: “You have become more confident.” “The company has grown significantly in the past year.”

For Achievements: “They have won the championship.” “I have written three books.”

For Unfinished Actions: “We have known each other since childhood.” “I have worked here since 2010.”

For Recent Events: “He has just left the office.” “I have already eaten dinner.”

For Results in the Present: “She has broken her leg.” (She is in a cast now.) “We have bought a new house.” (We live there now.)

For Repeated Actions: “I have read that book three times.” “They have traveled to Japan every summer.”

Note that the present perfect tense often uses adverbs like ‘ever,’ ‘never,’ ‘just,’ ‘already,’ ‘yet,’ ‘recently,’ ‘lately,’ and ‘so far’ to indicate the time frame and relevance to the present.

Also, the present perfect is used to describe actions that occurred at an unspecified time in the past. The exact time is not important.

Distinguishing from Simple Past: The present perfect should not be confused with the simple past, which is used for actions completed at a specific time in the past.

Example: “I visited Paris last year.” (This sentence is in Simple past.) comparing with “I have visited Paris.” (Which is in Present perfect)

Understanding these situations will help you know when to use the present perfect tense accurately.

That’s it for today’s lesson on the present perfect tense. I hope you found this video helpful.

大家好！歡迎回到我們的頻道。今天，我們將深入探討英語語法的迷人世界，特別是現在完成式。所以，拿起你的筆記本，讓我們開始吧！首先，讓我們談談現在完成式的形成。現在完成式是用 ‘have’ 或 ‘has’ 加上動詞的過去分詞形成的。

讓我們來看一些例子：
I have cleaned my shoes. 它意味著“My shoes are clean now.” They have gone out. 意味著”They are not at home now.” 現在，讓我們來分解結構。對於 ‘I’, ‘we’, ‘you’, ‘they’，我們使用 ‘have’。對於 ‘he’, ‘she’, ‘it’，我們使用 ‘has’。’I’, ‘we’, ‘you’, 或 ‘they’ have cleaned. 和 ‘he’, ‘she’, 或 ‘it’ has cleaned。

接下來，讓我們區分規則動詞和不規則動詞。規則動詞的過去分詞以‘ed’結尾。例如：clean 變成 cleaned, finish 變成 finished, start 變成 started。不規則動詞則不遵循此規則。例如：buy 變成 bought, go 變成 gone, and see 變成 seen。現在，讓我們探索一下我們使用現在完成式的不同情況。

首先，是關於‘經驗’。我們使用現在完成式來談論某個人生活中某些時候發生的經驗或行為，而不指定它們發生的時間。Example: “I have visited Paris.” 這裡，訪問的確切時間並不重要。其次，當涉及到‘時間變化’時。這種時態也用來描述一段時間內發生的變化。Example: “She has grown a lot since I last saw her.” 此外，它可以用來談論 ‘成就’。當我們談論成就或已完成的行為時，我們使用現在完成式。Example: “They have finished their homework.” 此外，我們可以用它來談論‘未完成的行動’ 我們描述一個始於過去並持續到現在的行為。Example: “I have lived in London for five years.” 這意味著‘I still live in London.’

我們也可以用它來描述‘最近的事件’。例如，描述最近發生並且現在仍然相關的事件。Example: “He has just finished his lunch.” 接下來，這種時態可以用來說明 ‘當前的結果’。例如，我們可以描述帶有當前結果的過去行為。Example: “I have lost my keys.” 這意味著‘I cannot find them now.’

最後，當我們談論‘重複的行動’時。我們可以用它來談論到目前為止重複發生的行動。Example: “We have visited that museum several times.” 這裡有一些額外的現在完成式使用例子：

對於經驗：”Have you ever ridden a horse?” “She has never been to New York.”

對於時間變化：”You have become more confident.” “The company has grown significantly in the past year.”

對於成就：”They have won the championship.” “I have written three books.”

對於未完成的行動：”We have known each other since childhood.” “I have worked here since 2010.”

對於最近的事件：”He has just left the office.” “I have already eaten dinner.”

對於當前的結果：”She has broken her leg.” (She is in a cast now.) “We have bought a new house.” (We live there now.)

對於重複的行動：”I have read that book three times.” “They have traveled to Japan every summer.”

請注意，現在完成式經常使用像 ‘ever,’ ‘never,’ ‘just,’ ‘already,’ ‘yet,’ ‘recently,’ ‘lately,’ 和 ‘so far’ 這樣的副詞來指示時間框架和與當前的相關性。

此外，現在完成式用來描述在過去一個不確定的時間發生的行為。確切的時間並不重要。區分簡單過去時：現在完成式不應與簡單過去時混淆，後者用於在特定時間完成的行動。

Example: “I visited Paris last year.” (這句話是簡單過去時。) 與 “I have visited Paris.” (這是現在完成式。)

了解這些情況將幫助你準確地知道何時使用現在完成式。這就是今天關於現在完成式的課程。我希望你覺得這段視頻有幫助。