现在完成式
To grasp the usage of the present perfect tense.
掌握现在完成时态的用法。
French tense to the present perfect tense in English.
法语中没有和英语的现在完成时完全对应的时态。
Explain and illustrate the main use of the present perfect tense .
解释并举例说明现在完成时态的用法。
Greeting students and say two sentences about Mid-autumn using the Present Perfect Tense.
设计意图：根据中秋节这一主线，创设情境，引出现在完成时。
Ask students to look at some pictures about some places and talk about them using the present perfect tense.
以一些著名地方的图片引入，调动学生的学习积极性， 活跃课堂气氛。
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。
Present Perfect Tense: There have been thousands of quarrels between the couple since Edward was fired.
自从爱德华被辞退后，他们夫妇就吵闹不休。
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。
Present Perfect Tense.
现在完成时。
When you ask about something that started in the past but continues to the present time, you use the Present Perfect tense, e.g.
当你谈论从过去开始一直持续到现在的某件事时，用现在完成法时态。
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。
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。
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。
In English learning, it is difficult for learners to master the tense , especially the past tense and the present perfect tense.
英语学习中，时态的学习和运用对学习者尤其中低水平学习者来说是一个困难之处。
Talk about the uses of the present perfect tense.
表示过去发生的事对现在仍有影响。
In this case, the past or present perfect tense should be used according to the grammatical rules of common English.
若按普通英语的动词时态规则，就得用一般过去时或现在完成时。
We use the present perfect tense to talk about things that started in the past and still have some connection with the present.
我们用现在完成时来谈论在过去开始并且仍与现在有联系的事情。
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。
When you ask about something that started in the past but continues to the present time, you use the Present Perfect tense, e.g.: I’ve been there for 5 years / I’ve been there for 5 years.
当你谈论在过去开始但是一直持续到现在的某事时，用现在完成时态，例如：I’vebeentherefor5years/我在那里已经5年了。
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。
Right now, your problems are probably more basic: mistakes in pronunciation, small vocabulary, grammar problems with the present perfect tense and conditional structures.
现在，你的问题大概更基础：发音上的错误，小词汇量，现在完成时的和条件句的结构的语法问题。
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。
Write a survey report about the students' summer holidays, using the ****** past tense and the present perfect tense.
让学生完成暑期调查表格，并写出调查报告，进一步熟练运用现在完成时。
T: Great. As you can see in the above two sentences, we use the ****** past tense to talk about a past action and we use the present perfect tense to talk about a past action that lasts till now.
以现在完成进行时输出环节的任务设置为例，从语法教学的三要素来看，目标语法的学习难点在于其用法，尤其是其与一般过去时、现在完成时在用法上的区别。
We use the present perfect tense to talk about the result of an action.
我们用现在完成时谈论的过去发生的一个动作对现在造成的影响或结果。
现在时完成时（Present Perfect Tense）是英语中一种重要的时态，用于描述发生在过去但与现在有联系的动作或状态。其核心特点是强调动作的完成性及其现时相关性，而非单纯表示过去的时间点。以下是详细解析：
已完成动作的现时影响
表示过去发生的动作虽已完成，但其结果、影响或状态持续到现在。
例：She has lost her keys.（她丢了钥匙 → 现在仍找不到）
I have finished my homework.（作业已完成 → 现在可自由安排时间）
从过去持续到现在的状态
描述始于过去并延续至今的动作或状态，常与持续性时间状语连用（如 for/since）。
例：He has lived here for ten years.（十年前开始居住 → 至今仍住在此处）
We have known each other since childhood.（从童年相识 → 现在仍相熟）
过去经历对现在的参照
强调主语过去至今的经验或经历，常与 ever/never/before 等词搭配。
例：Have you ever visited Japan?（询问人生经历）
She has never eaten sushi.（至今未尝试过）
未完成的动作或期待
在否定句中表示尚未发生但可能发生的事（常与 yet/already 连用）。
例：The package has not arrived yet.（包裹未到 → 但预计会到）
He has already left.（动作已完成 → 无需再等待）
肯定句：主语 + have/has + 过去分词（Past Participle）
They have seen the movie.
She has written a report.
否定句：主语 + have/has + not + 过去分词
I have not (haven't) received the email.
疑问句：Have/Has + 主语 + 过去分词？
Has he signed the contract?
不确定过去时间：already, recently, lately, just
Scientists have recently discovered a new species.
持续时段：for + 时间段, since + 时间点
The treaty has been in effect since 1995.
经历描述：ever, never, once, before
This is the best novel I have ever read.
| 现在时完成时 | 一般过去时 |
|---|---|
| 强调与现在的关联性 | 仅描述过去动作，与现在无关 |
时间状语无具体点（如 already） |
时间状语明确（如 yesterday, in 2020） |
| 例：I have been to Paris.（曾去过，经验仍在） | 例：I went to Paris last year.（仅陈述过去事件） |
定义现在时完成时为"连接过去与现在的桥梁"，详解其四种核心用法（完成、持续、经验、重复动作）。
通过例句解析时态结构，区分与过去时的使用场景。
提供互动练习及常见错误分析（如误用for/since）。
× I have watched the film yesterday.
✓ I watched the film yesterday.（需改用一般过去时）
been与gone：
She has been to Japan.（曾去过，已返回）
She has gone to Japan.（已前往，仍在日本）
掌握现在时完成时的关键在于理解"过去动作"与"现时影响"的逻辑纽带，通过语境判断是否需强调这种关联性。
现在完成时（Present Perfect Tense）是英语语法中的一种复合时态，用于连接过去与现在的动作或状态。其核心特征和用法如下：
由助动词 have/has + 动词过去分词构成：
过去动作的现在影响 强调过去发生的动作对当前产生的结果或关联：
He has broken his leg（现在腿仍受伤）
I've lost my keys（现在找不到钥匙）
持续至今的状态 搭配 since/for 表示从过去延续到现在的经历或状态：
We have known each other since 2010
They have lived here for ten years
未指明具体时间 用于未明确提及过去时间的情况：
Scientists have discovered a new planet（未说明何时发现）
常用副词体现"过去到现在的关联性"：
She has already left
Haven't you finished yet?
| 时态 | 示例 | 区别 |
|---|---|---|
| 一般过去时 | I ate breakfast | 仅描述过去动作 |
| 现在完成时 | I have eaten | 强调现在不饿/与当前相关 |
掌握这一时态需注意语境中"过去与现在的逻辑关联"，可通过大量阅读和写作练习培养语感。
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