彻底搞懂英语语法难点:since vs for,I have been vs I was:英语精读讲义

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视频简介:本课区分延续到现在的状态与已经结束的过去情况,说明 since 和 for 如何分别表示开始时间点与持续时长,并梳理情绪类 -ing 和 -ed 形容词在“引发感受”与“体验感受”上的区别。 主要英语知识点: 1. I have been busy, — 语法与句型:理解现在完成时会把过去开始的状态连接到现在,因此说话者此刻仍然很忙。这样,当情况仍在持续或仍影响现在时,你就能选用这个结构,而不是表示过去状态已经结束的 I was busy。 2. I've been waiting for an hour / I've been waiting since 5:00. — 语法与句型:for 后接已经持续的时间长度,since 后接仍在继续的动作开始时的具体时间点。这组对照能帮助你从“持续了多久”和“何时开始”两个角度准确表达同一个持续动作。 3. -ing form / -ed form — 语法与句型:识别情绪形容词的 -ing 形式通常描述引发情绪的事物或人,而 -ed 形式描述体验该情绪的人。你可以把这一规律迁移到 annoying/annoyed、boring/bored 和 tiring/tired 等词组中。

本篇讲解

What's the difference between I have been and I was? 短語搭配

0:00

“I have been”和“I was”有什么区别?

短語搭配

What's the difference between A and B?:询问 A 和 B 的区别

用 What's the difference between A and B? 询问两个明确对象有哪些不同。between 后先说 A,再用 and 接 B。 这个句型可用于比较单词、语法形式、物品或观点。例句中,说话人是在询问 I have been 和 I was 在含义或用法上有什么不同。

练习

用本课短语补全问句:____ a comet and an asteroid?

查看答案

What's the difference between

Between since and for?

0:04

“Since”和“For”之间呢?

And what about annoying and annoyed?

0:07

还有“annoying”和“annoyed”又该怎么分?

Let's clear up all this confusion in just a few minutes. 短語動詞

0:09

让我们在几分钟内彻底理清这些困惑。

短語動詞

clear up confusion:把困惑解释清楚

这里的 clear up 表示通过解释,让令人困惑的事情变得清楚。它的宾语是 all this confusion,所以这个动作与理解有关,不是实际的清扫。 clear up 是一个短语动词,常接 confusion 或 a misunderstanding 等宾语;清楚的解释可以 clear them up,也就是消除这些困惑或误会。

练习

填入表示“通过解释消除困惑”的短语动词:The map should ____ any confusion about the route.

查看答案

clear up

Let's start with I have been and I was.

0:13

先从“I have been”和“I was”开始。

Many English learners mix them up, but they express two different ideas. 短語動詞

0:16

很多英语学习者会混淆它们,但它们表达的是两种不同的概念。

短語動詞

mix them up:把相似事物弄混

mix them up 表示把这两个表达弄混,分不清哪个是哪个。这里的 them 指前面讨论的两个英语形式;up 是短语动词的一部分,不表示方向。 宾语是代词时,要把它放在 mix 和 up 之间:mix them up,不能说 mix up them。宾语是名词时,mix the names up 和 mix up the names 都可以。

练习

请用 mix up 和代词 them 完成句子:These two road signs look similar, so I sometimes ____.

查看答案

mix them up

When you say I have been busy, 語法

0:20

当你说“I have been busy”(我一直很忙),

it means the action started before and continues now.

0:22

意思是动作从过去开始,一直持续到现在。

語法

I have been busy:持续到现在的状态

I have been busy 使用 have + been + 形容词的结构。这是 be 的现在完成时;这里的 have 不是“拥有”的意思。 在这句话中,忙碌的状态在现在之前就开始了,而且现在仍在持续。一般来说,have/has been + 形容词可以把较早的起点与现在仍然成立的状态联系起来。

练习

请用标出的现在完成时结构完成句子:I ____ since breakfast.

查看答案

have been busy

You're still busy.

0:26

你现在依然很忙。

It connects your past to your present.

0:27

它把你的过去和现在连接了起来。

For example, I have been tired all day means 語法

0:30

例如,“I have been tired all day”(我一整天都很累)意味着

even at this moment, you still feel tired.

0:33

即使此时此刻,你仍然感到疲惫。

語法

I have been tired all day:持续到现在的状态

在这句话中,I have been tired all day 表示疲惫的状态从今天较早的时候开始,并一直持续到说话时。现在完成时 have been 把今天较早的时段和现在连接起来。 这里的 all day 包括当前时刻。当某种状态从较早的时候开始、现在仍然成立时,可以用 have/has been + 形容词,再搭配 all day 之类的时间表达。

练习

用 be 和 tired 的现在完成时形式完成句子:I ____ all day, and I still feel tired now.

查看答案

have been tired

But when you say I was busy, 語法

0:36

但当你说“I was busy”(我当时很忙),

you're talking about something that happened before and ended.

0:38

你在谈论以前发生并已经结束的事情。

It's in the past.

0:41

那是过去的事了。

語法

I was busy:已经结束的过去状态

在这段讲解中,I was busy 把忙碌状态放在现在之前,并将它视为已经结束。was 是 be 与 I 搭配时使用的一般过去时形式。 一般过去时描述过去时间范围内的情况,不把这个状态与现在相连。yesterday afternoon 之类的过去时间表达可以让这个时间范围更清楚。

练习

用 be 和 busy 的一般过去时形式完成句子:I ____ yesterday afternoon, but I am free now.

查看答案

was busy

For example, I was busy yesterday

0:42

例如,“I was busy yesterday”(我昨天很忙)

means that yesterday you had things to do, but now you're free.

0:45

意味着昨天你有事做,但现在你有空了。

The difference is simple, but powerful.

0:49

这个区别很简单,但非常重要。

I have been means the effect continues,

0:51

“I have been”意味着影响还在持续,

while I was means it's finished.

0:54

而“I was”意味着事情已经结束。

Listen carefully.

0:57

仔细听。

I have been hungry since morning 語法

0:58

“I have been hungry since morning”(我从早上饿到现在)

shows you're still hungry right now.

1:00

表明你现在还是很饿。

語法

since morning:since + 起始时间点

在 since morning 中,since 引出这个状态开始的时间点:morning。和 have been hungry 搭配时,句子表示饥饿从这个起点一直持续到现在。 表示持续状态时,可以套用 have/has been + 形容词 + since + 起始时间点。since 回答的是“从什么时候开始?”

练习

哪句话表示说话人从八点开始饿,而且现在仍然饿?

  1. I have been hungry since eight o'clock.
  2. I have been hungry for eight o'clock.
  3. I was hungry at eight o'clock.
查看答案

I have been hungry since eight o'clock.

I was hungry in the morning

1:02

“I was hungry in the morning”(我早上很饿)

shows you already ate.

1:03

表明你已经吃过了。

One connects to now,

1:05

一个与现在有关联,

the other doesn't.

1:06

另一个则没有。

Now let's move on to since and for. 短語動詞

1:08

现在我们来看看“since”和“for”。

短語動詞

move on to:引出下一个话题

move on to 表示结束当前正在谈论或进行的部分,开始下一个点明的话题、任务或阶段。字幕中,说话人用它把课程转到 since 和 for;这里没有身体移动。 结构是 move on to + 名词或活动。Now let's 让这个转场听起来像大家一起进行的下一步,例如:Let's move on to the next question.

练习

请用以 move 开头、表示“开始下一部分”的三词短语完成句子:We have finished the example. Let's ____ the next question.

查看答案

move on to

These two little words can be confusing,

1:11

这两个小词可能会让人困惑,

but once you understand them, they're super easy.

1:13

但一旦你理解了,它们其实超级简单。

Since talks about the time when something started.

1:16

“Since”谈论的是事情开始的时间点。

For talks about how long it has continued.

1:19

“For”谈论的是事情持续了多久。

If you say I have lived here since 2020, 語法

1:22

如果你说“I have lived here since 2020”(我自2020年起住在这里),

語法

have lived here since 2020:从起点一直到现在

Have lived 把过去的起点和现在连接起来。在这句话中,这个人从 2020 年开始住在这里,而且现在仍住在这里。 Since 2020 表示开始的时间点,不是持续了多长时间。要表达从某个时间点开始并延续到现在的情况,可以用 have/has + 过去分词 + since + 起点。

练习

用表示起点的词完成句子:Maya moved here in 2021 and still lives here. Maya has lived here ____ 2021.

查看答案

since

you're telling me when you started living there.

1:25

你是在告诉我你是什么时候开始住那里的。

But if you say I have lived here for 5 years, 語法

1:27

但如果你说“I have lived here for 5 years”(我在这里住了5年),

語法

have lived here for 5 years:持续至今的时长

Have lived 把过去和现在连接起来。这里,住在此处的状态已经持续了五年,而且现在仍在继续。 For 5 years 表示时长,也就是截至现在持续了多久。可以用 have/has + 过去分词 + for + 一段时间。

练习

用表示时长的词完成句子:Amir moved to this city five years ago and still lives here. Amir has lived here ____ five years.

查看答案

for

you're showing the duration, the length of time.

1:30

你是在展示时长,即时间的长度。

Think of since as a starting point, 短語搭配

1:33

要把“since”看作一个起点,

a date, a year, or a specific moment.

1:36

一个日期、年份或特定的时刻。

短語搭配

Think of X as Y:把 X 理解为 Y

Think of X as Y 表示“把 X 理解为 Y”或“把 X 想象成 Y”。这个结构通过熟悉的概念来解释一个想法。这里把 since 理解为一个起点。 as 后面要说出有助于理解 X 的身份、功能或概念。在这个结构中,as 不表示动作进行的方式。

练习

用 Think of X as Y 中缺少的两个部分完成句子:____ this chart ____ a map of the story.

查看答案

Think of · as

Think of for as a period,

1:39

要把“for”看作一个时段,

minutes, hours, days, months, or years.

1:41

几分钟、几小时、几天、几个月或几年。

Listen again.

1:44

再听一遍。

I've known her since childhood

1:46

“I've known her since childhood”(我从童年起就认识她)

means I met her when I was a child and I still know her now.

1:48

意味着我在小时候遇见她,到现在还认识她。

I've known her for 10 years

1:51

“I've known her for 10 years”(我认识她10年了)

means the total duration of time is 10 years.

1:53

意味着总时长是10年。

So the easy rule is

1:56

所以简单的规则是:

since equals when it began.

1:58

“Since”等于何时开始。

For equals how long it lasted.

2:01

“For”等于持续了多久。

But here's something people often forget.

2:04

但这有一点人们经常忘记。

You always use since and for with perfect tenses,

2:07

你总是要在完成时态中使用“since”和“for”,

especially the present perfect.

2:11

特别是现在完成时。

You say, I've been waiting for an hour 語法

2:13

你会说,“I've been waiting for an hour”(我等了一个小时)

or I've been waiting since 5:00.

2:16

或者“I've been waiting since 5:00”(我从5点等到现在)。

語法

I've been waiting for... / I've been waiting since...:时长与起点

两个分句都用 I've been waiting 表示等待从过去开始,并一直持续到现在。后面的时间短语提供了不同的信息。 For an hour 表示时长,也就是已经等了多久。Since 5:00 表示起点,也就是从什么时候开始等。时间长度前用 for,开始时间前用 since。

练习

用正确的时间介词完成句子:I've been practicing ____ two hours, and I've been awake ____ 6:00.

查看答案

for · since

Both are correct, but not I waited since. 語法

2:18

这两个都是对的,但不能说“I waited since”。

That's wrong.

2:21

那是错的。

語法

I waited since:为什么不能表示持续到现在

在 not I waited since 中,not 用来引出纠正:I waited since 正是被否定的形式,不能把它当作可套用的句型。 如果等待从过去某个明确时间开始并持续到现在,要用现在完成时,通常用现在完成进行时:I've been waiting since 5:00。since 标出起点;一般过去时 I waited 通常把等待说成已经结束,而已经结束的过去时段用 from ... to ... 表达更清楚。

练习

用 wait 的现在完成进行时完成句子:I ____ since 5:00, and I'm still here.

查看答案

have been waiting

Keep that in mind when you speak.

2:22

说话时请记住这一点。

Finally, let's talk about annoying and annoyed. 語法

2:24

最后,我们来谈谈“annoying”和“annoyed”。

語法

annoying 和 annoyed:情绪来源与感受者

Annoying 和 annoyed 都是与烦躁情绪有关的形容词,但描述的角色不同。annoying 描述引起这种情绪的人、事物、声音或行为;annoyed 描述感到烦躁的人。 这里的词尾不是在表示两个不同的时间。判断时要问:谁或什么引起了这种情绪,谁感受到了这种情绪?The noise is annoying, so I am annoyed.

练习

按正确顺序使用 annoying 和 annoyed:The buzzing sound is ____, and everyone in the room feels ____.

查看答案

annoying · annoyed

They look similar, but they describe different feelings and situations.

2:27

它们看起来很像,但描述的是不同的感受和情况。

Annoying describes the thing that causes the feeling. 語法

2:31

“Annoying”描述的是引起这种感觉的事物。

語法

Annoying:情绪的来源

annoying 是形容词,用来描述引起烦躁感的人或事物。在本句中,它指的是这种感受的来源,而不是有这种感受的人。 所以 I am annoying 通常表示“我会让别人觉得烦”。如果要表达自己的感受,应说 I am annoyed。

练习

哪个句子使用 annoying 来描述这种感受的来源?

  1. The buzzing sound annoys me.
  2. The buzzing sound is annoying.
  3. I am annoyed by the buzzing sound.
查看答案

The buzzing sound is annoying.

Annoyed describes the person who feels it. 語法

2:34

“Annoyed”描述的是感受到这种情绪的人。

語法

Annoyed:感到这种情绪的人

annoyed 是形容词,用来描述感到烦躁的人。在本句中,who feels it 指的就是正在体验这种情绪的人。 这里的 -ed 表示一种状态,并不只是过去发生的动作。可以说 I am annoyed、she looks annoyed 或 they got annoyed。

练习

哪个句子使用 annoyed 来描述有这种情绪的人?

  1. Maya feels annoyed by the delay.
  2. The delay is annoying.
  3. The delay annoys Maya.
查看答案

Maya feels annoyed by the delay.

For example, that noise is annoying.

2:37

例如,“That noise is annoying”(那个噪音很烦人)。

The noise is the thing that causes irritation.

2:40

噪音是引起烦躁的事物。

I am annoyed by the noise. 短語搭配

2:43

“I am annoyed by the noise”(我对噪音感到厌烦)。

短語搭配

annoyed by:说明这种感受的原因

在 be annoyed by something 中,annoyed 描述人的感受,by 引出造成这种感受的事物或行为。本句中,the noise 是烦躁的来源。 当你想同时说明谁感到烦躁以及是什么引起这种感受时,可以使用“主语 + be + annoyed by + 原因”结构。

练习

用 annoyed by 完成句子:Mia could not study because of the buzzing sound. Mia was ____ the buzzing sound.

查看答案

annoyed by

I'm the one feeling irritated.

2:45

我才是那个感到烦躁的人。

Easy, right?

2:47

简单吧?

The -ing form shows the source of the emotion 語法

2:48

-ing 形式表示情绪的来源,

and the -ed form shows the receiver of that emotion.

2:51

-ed 形式表示情绪的接受者。

語法

-ing form 和 -ed form:什么引起感受,谁感受到它

在许多由情绪动词构成的形容词词对中,-ing 形式描述引起某种感受的人、事物或情况,-ed 形式描述感受到这种情绪的人或动物。 a boring lesson 会让人无聊,而 a bored child 是感到无聊的孩子。这里的 -ed 是形容词的一部分,本身并不表示过去时间。

练习

用 excite 的正确形容词形式完成句子:The roller coaster was ____, and the riders were ____.

查看答案

exciting · excited

Here's another example.

2:54

再举个例子。

The movie was boring

2:56

“The movie was boring”(电影很无聊)

means the movie caused the feeling.

2:58

意思是电影引起了这种感觉。

I was bored

3:00

“I was bored”(我感到无聊)

means I felt that emotion.

3:01

意思是我感受到了那种情绪。

So when you want to describe something that makes you feel a certain way,

3:02

所以当你想要描述让你产生某种感觉的事物时,

use the -ing adjective.

3:06

使用 -ing 结尾的形容词。

Annoying, boring, tiring, exciting.

3:08

Annoying(烦人的)、boring(无聊的)、tiring(累人的)、exciting(令人兴奋的)。

But when you want to describe your emotion,

3:12

但当你想要描述你的情绪时,

use the -ed adjective.

3:14

使用 -ed 结尾的形容词。

Annoyed, bored, tired, excited.

3:16

Annoyed(烦躁的)、bored(无聊的)、tired(累的)、excited(兴奋的)。

Listen carefully to the difference.

3:20

仔细听这个区别。

My job is tiring

3:22

“My job is tiring”(我的工作很累人)

means the job makes me feel tired.

3:23

意味着工作让我感到累。

I am tired

3:25

“I am tired”(我很累)

means I feel the result of it.

3:26

意味着我感受到了那个结果。

My friend is interesting

3:28

“My friend is interesting”(我的朋友很有趣)

means my friend makes me curious.

3:29

意味着我的朋友让我感到好奇。

I am interested

3:32

“I am interested”(我很感兴趣)

means I feel curious.

3:33

意味着我感到好奇。

The same pattern works for almost all emotion-related adjectives.

3:35

同样的模式适用于几乎所有与情绪相关的形容词。

Let's review quickly.

3:39

让我们快速复习一下。

I have been means something started in the past and continues now.

3:41

“I have been”意味着某事从过去开始并持续到现在。

While I was means something happened in the past and ended.

3:45

而“I was”意味着某事发生在过去并且已经结束。

Since is for the starting time,

3:49

“Since”用于开始的时间,

for is for the duration.

3:51

“For”用于持续的时长。

And annoying describes the thing that causes the feeling,

3:53

还有,“annoying”描述的是引起感觉的事物,

while annoyed describes the person who feels it.

3:56

而“annoyed”描述的是感受到它的人。

Simple, right?

3:59

很简单,对吧?

If you can remember these small details,

4:00

如果你能记住这些小细节,

your English will sound much more natural and accurate. 短語搭配

4:02

你的英语听起来会自然和准确得多。

短語搭配

sound much more natural and accurate:sound + 形容词

这里的 sound 表示“听起来显得……”,不是“发出声音”。sound + 形容词描述某事物给听者的印象:别人听到你的英语时,会觉得它自然且准确。 much 加强 more natural 的比较程度,表示“自然得多”。natural 和 accurate 是两个并列形容词:natural 表示措辞符合正常英语习惯,accurate 表示内容或用法正确。

练习

哪一句正确表达“新版本听起来清楚得多”?

  1. The new version sounds much clearly.
  2. The new version sounds much clearer.
  3. The new version sounds like much clearer.
查看答案

The new version sounds much clearer.

So next time someone asks, "Why are you tired?"

4:05

所以下次有人问,“Why are you tired?”(你为什么累?)

you can say, "I have been working all day." 語法

4:08

你可以说,“I have been working all day.”(我一直在工作。)

語法

I have been working all day:have been + 动词-ing

I have been working 使用现在完成进行时,结构是 have been + 动词-ing。它把工作描述为一项较早开始、持续到现在,或刚刚才停止的活动。 在这个语境中,all day 表示持续时间,而一直工作的活动解释了现在的结果:说话人现在很累。这个时态强调持续的活动及其与现在的联系,而不只是一个已经结束的过去事件。

练习

用 work 的现在完成进行时完成句子。活动从早餐时开始,现在仍在继续:I ____ since breakfast.

查看答案

have been working

Not I was working unless your work is finished. 語法

4:11

不要说“I was working”,除非你的工作已经做完了。

語法

I was working ... unless your work is finished:过去视角与当前联系

这里是在纠正说法,unless 表示“除非”或“只有在……的情况下才”。整句话应理解为“除非你的工作已经完成,否则不要说 I was working”。unless 从句限定了这个否定:如果工作现在仍在继续,I was working 就不是想表达的形式。 I was working 是过去进行时,表示某项活动在过去某个参照时间正在进行,本身并不把活动和现在联系起来。如果工作之前已经开始、现在仍在继续,应使用 I have been working。即使工作已经结束,I was working 通常也需要一个明确的过去时间或过去事件。

练习

你上午9点开始工作,现在仍在工作。哪句话最准确?

  1. I was working since 9 a.m.
  2. I have been working since 9 a.m.
  3. I am working since 9 a.m.
查看答案

I have been working since 9 a.m.

And if the traffic is making too much noise,

4:13

如果交通噪音太大了,

say, "That sound is annoying." 語法

4:15

说,“That sound is annoying.”(那个声音很烦人。)

語法

That sound is annoying:用 -ing 描述感受的来源

在 That sound is annoying 中,annoying 描述引发感受的原因。主语 that sound 是造成这种反应的事物,因此这句话表示这个声音让人感到烦躁。 可迁移的结构是 thing or situation + be + annoying。-ing 形容词标记造成感受的人、事物或情况,并不是说声音自己有某种感受。

练习

请用 annoy 构成的正确形容词完成句子:The loud buzzing is ____.

查看答案

annoying

Not I am annoying.

4:17

不要说“I am annoying”。

Remember, I am annoyed, not I am annoying. 語法

4:19

记住,是“I am annoyed”(我感到烦),而不是“I am annoying”(我很烦人)。

語法

I am annoyed,而不是 I am annoying:感到烦与令人烦

I am annoyed 描述说话人的感受:某件事让说话人觉得烦躁或恼火。I am annoying 描述说话人对别人的影响:说话人让别人觉得烦。 在这类情绪形容词中,-ed 形式通常描述承受情绪影响的人的感受,-ing 形式通常描述引发这种感受的人或事物。

练习

哪一句表示你现在觉得很烦?

  1. I am annoyed.
  2. I am annoying.
  3. I am annoyance.
查看答案

I am annoyed.

Words may look similar, but their meanings are completely different.

4:22

单词可能看起来很像,但意思完全不同。

Mastering small grammar details like these

4:26

掌握像这样的小语法细节,

is what makes your English smooth and professional. 語法

4:28

能让你的英语流畅且专业。

語法

is what makes:突出产生结果的关键原因

在 A is what makes B + adjective 中,A 被突出为使 B 具有某种特征的关键因素。本句把掌握语法小细节说成让英语变得流畅而专业的关键。 what makes your English smooth and professional 是放在 is 后面的名词性从句。what 在这里表示“起这种作用的事物或因素”,不是疑问词。从句内部使用 make + 宾语 + 形容词:makes + your English + smooth and professional。

练习

用高亮的三个词结构完成句子:Daily practice ____ your movements smooth and confident.

查看答案

is what makes

If you found this helpful, repeat after me.

4:31

如果你觉得这个视频有帮助,请跟着我念。

I have been learning English for 5 minutes 語法

4:34

“I have been learning English for 5 minutes”

since this video started.

4:36

“since this video started.”

語法

have been learning ... for ... since ...:持续到现在的动作、时长和起点

have been learning 的结构是 have + been + 动词-ing,属于现在完成进行时。这里表示学习从过去开始,并一直持续到说话的现在。 for 5 minutes 说明持续时长,回答“多久”;since this video started 指出开始事件,回答“从什么时候开始”。两者可以同时出现,因为它们提供不同的时间信息,但必须对应同一段时间。

练习

用 for 和 since 完成句子:The children have been playing outside ____ an hour ____ the rain stopped.

查看答案

for · since

That sentence includes both have been,

4:38

这句话包含了“have been”、

for, and since.

4:41

“for”以及“since”。

Congratulations.

4:44

恭喜。

You just practiced all three in one sentence.

4:45

你刚刚在一个句子里练习了这三个知识点。

Keep practicing every day

4:48

坚持每天练习,

and soon you'll never confuse these phrases again.

4:50

很快你就再也不会搞混这些短语了。