Grammar: How to use IF & WHETHER properly

Hi again. Welcome back to www.engvid.com. My name's Adam. Welcome again. Today's lesson

你好，我們又見面了。歡迎回到www.engvid.com。我的 名字的亞當。再次歡迎。今天的課程

is a grammar lesson, and this is a question that I am asked often. What is the difference

是一門語法課，這是一個問題 我經常被問到。有什麼不同

between "if" and "whether"? Okay? It's a very good question. It's pretty simple, straightforward,

在“if”和“是否”之間？好的？這是非常好的 題。這很簡單，直截了當

but we're going to look at both of these in relation to each other.

但是我們要看看兩者 這些相互關聯。

First of all, let's make sure everybody understands "whether" is not spelled the same as "weather",

首先，讓我們確保每個人都理解 “是否”拼寫與“天氣”不同，

like sunny, raining. This is about rain, sun, snow, wind, temperature; this is similar to

喜歡陽光，下雨。這是關於下雨，太陽， 雪，風，溫度;這類似於

"if", it's about having choices. Okay?

“如果”，那是關於做出選擇的。 好的？

So, in some situations, "if" and "whether" are interchangeable, but the best way to not

所以，在某些情況下，“如果”和“是否” 是可以互換的，但最好不要

make a mistake, not to mix them up in the wrong context is to always use "if" for conditionals;

犯錯誤，不要混淆錯誤 上下文總是使用“if”作為條件;

always use "whether" when you're talking about two alternatives, two choices. Okay? You'll

在談論時總是使用“是否” 兩種選擇，兩種選擇。好的？你會

see what I mean.

明白了嗎。

When they can be interchanged. First of all, when they are used as noun clauses, means

什麼時候可以互換。首先， 當它們被用作名詞從句時，就意味著

they can be the object or the subject of a sentence, they can mean the same thing. But

它們可以是一個對像或主題 句子，他們可以意味著同樣的事情。但

again, avoid using them the same if you don't want to make mistakes. "Do you know if Dan

再次，如果你不這樣做，請避免使用它們 想犯錯誤。 “你知道Dan

is coming?" Do you know what? If Dan is coming. "Do you know whether Dan is coming?" In this

來了嗎？“你知道嗎？如果丹來了。 “你知道丹是否會來嗎？”在這

case, they basically mean the same thing. Yes or no: is he coming or is he not coming?

在這種情況下，它們基本上意味著相同是 或者不是：他來了還是他不來？

You could add the "or not?" here: "Do you know whether Dan is coming or not?" But the

你可以添加“或不？”在這：“你呢 知道丹是否會來？“但是

word "whether" already gives you a choice between yes or no in this particular case,

“是否”這個詞已經給你一個選擇 在這種特殊情況下是或否

so this is not necessary. It's understood. Okay?

所以這不是必要的。 據了解。好的？

Now, let's look at these two sentences: "I don't know if the exam is on Friday or Saturday.",

現在，讓我們看看這兩句話：“我沒有 知道考試是在周五還是周六。“，

"I don't know whether the exam is on Friday or Saturday." So here, we're looking directly

“我不知道考試是否在星期五 或者星期六。“所以在這裡，我們直接看

at a choice. When I use "whether": "I don't know whether the exam is on Friday or Saturday."

在選擇。當我使用“是否”時：“我不知道 考試是在周五還是周六。“

So again, you have two options when you look at "whether". Friday is one option, Saturday

所以再一次，你看起來有兩個選擇 在“是否”。星期六是星期六的一種選擇

is another option. The problem here is if you use "if", "if" is not limited to two options.

是另一種選擇。這裡的問題是如果你 使用“if”，“if”不限於兩個選項。

"I don't know if the exam is on Friday or Saturday, or if it's next week sometime."

“我不知道考試是星期五還是 星期六，或者下周某個時候。“

So here, although they seem to mean the same thing, the "if" gives you other options that

所以在這裡，雖然它們似乎意味著相同 事情，“如果”給你其他選擇

the "whether" doesn't. "Whether": one, two. "If": one, two, or something completely different.

“是否”沒有。 “是否”：一，二。 “如果”： 一，二，或完全不同的東西。

So if you want to avoid making this mistake, use "whether" for the choices, use... Save

所以，如果你想避免犯這個錯誤， 使用“是否”作為選擇，使用...保存

"if" for when you have your conditional sentence. Now, what is a conditional sentence? A conditional

當你有條件判刑時“如果”。 現在，什麼是條件句呢？有條件的

sentence is using "if" as an adverb clause. There's a condition. If "A" happens, "B" will

句子使用“if”作為副詞。 有一個條件。如果“A”發生，“B”將發生

happen. Okay? One thing needs to happen for the second thing to happen, that's the condition.

發生。好!有一件事需要發生 第二件事發生了，這就是條件。

So: "Let me know", oh, sorry. I forgot this word, here. "Let me know if you're coming.",

所以：“讓我知道”，哦，對不起。我忘了這個 字，這裡。 “如果你要來，請告訴我。”，

"Let me know whether you're coming." In this case, they're both okay. "Let me know whether

“讓我知道你是否會來。”在這 他們都沒事。 “讓我知道是否

you're coming or not."

你要不要來。“

Now, what's the difference between: "Let me know if you're coming", "Let me know whether

現在，有什麼區別：“讓我吧 知道你是否來“，”讓我知道是否

you're coming or not"? If you are coming, yes, let me know. This is a conditional. If

你要不來了？？如果你要來， 是的，請告訴我。這是有條件的。如果

this is true, do this. "Let me know whether you're coming or not." If you're coming, let

這是真的，這樣做。 “讓我知道是否 你要不要來。“如果你要來，請讓

me know; if you're not coming, let me know. So in this case, both apply. Okay? So, again,

我知道;如果你不來，請告訴我。 所以在這種情況下，兩者都適用。好的！所以，再來一次，

use this to... The condition. This is the condition, this is the result. Here, this

用這個......條件。這是 條件，這是結果。在這裡，這個

is going to happen regardless. So we're going to look at this in a second in more detail.

無論如何都會發生。所以我們要走了 更詳細地了解一下這一點。

Okay?

好的？

"I'll come over if you want me to." If you want it, I will do it; if you don't want it,

“如果你想要我，我會過來的。”如果你 想要它，我會做的;如果你不想要它，

I will not do it. So this is the condition. If you want me to, I'll come over. This is

我不會這麼做的。所以這就是條件。 如果你想要我，我會過來的。這是

the condition, this is the result. So your best option is to always use "if" with conditionals,

條件，這是結果。所以你最好的 選項是始終使用帶有條件的“if”，

use "whether" to talk about two alternatives.

用“是否”來說話 大約兩種選擇。

Now, the other common use of "whether" is to mean "regardless". Doesn't matter what

現在，“是否”的另一個常見用途是 意思是“不管”。什麼都沒關係

happens, regardless of the situation, here's what I want you to do. "I'm coming over whether

無論情況如何，都會發生這種情況 我想要你做什麼。 “我是否會過來

you like it or not." Okay. "Whether you like it or not" means if you like it, I'm coming

你喜不喜歡。“好的。”不管你喜不喜歡 是不是“意味著如果你喜歡它，我來了

over; if you don't like it, too bad, I'm coming over. So this verb is going to happen regardless

過度;如果你不喜歡它，那太糟糕了，我來了 過度。所以這個動詞無論如何都會發生

of this situation. Okay? So that's when we must also use the "or not". Remember here,

這種情況。好的？那就是我們的時候 還必須使用“或不”。請記住，

I said "or not" can come out because it's understood here. Here are your two options.

我說“或不”可以出來，因為它是 在這裡明白了這是你的兩個選擇。

Here, it's not about options. Here, it's about saying something is regardless. Doesn't matter

在這裡，它不是關於選項。在這裡，它是關於 說不管怎樣。無所謂

what you like, what you don't like - I'm coming over. Okay? "I'm coming over if you like it",

你喜歡什麼，你不喜歡什麼 - 我來了 過度。好的？ “如果你願意的話，我會過來的，”

it means: you like it, I'm coming; you don't like it, I'm not coming. Okay?

它意味著：你喜歡它，我要來了;您 我不喜歡它，我不會來。好的？

So: "whether", to talk about regardless, you must have the "or not". To give the options,

所以：“是否”，談論不管，你 必須有“或不”。給出選擇，

you don't need the "or not". If, in a noun clause-means this situation-is the object

你不需要“或不”。如果，在名詞中 子句 - 意味著這種情況 - 是對象

of "know". Know what? If he is coming. Yes or no. Here, it's a conditional. So first

“知道”。知道什麼？如果他要來是 或沒有。在這裡，這是一個有條件的。所以首先

of all, you must understand: is it a noun clause object or is it an adverb clause condition?

總之，你必須明白：它是一個名詞條款 對像還是副詞條款？

So, to avoid making mistakes, especially in written English: use "if" for conditionals,

所以，要避免犯錯，特別是在 書面英語：使用“if”作為條件，

use "whether" for alternatives or to mean "regardless". Okay? It's a little bit tricky,

使用“是否”替代或意味著 “而不管”。好的！這有點棘手，

but when you see more examples, it will become much clearer.

但是當你看到更多的例子， 它會變得更加清楚。

So if you want to see more examples, come to www.engvid.com. There's a quiz there that

所以，如果你想看到更多的例子，請來 www.engvid.com。那裡有一個小測驗

will test your understanding of this. Ask any questions you have on the comments section.

將測試你對此的理解。問任何 您在評論部分提出的問題。

Don't forget to subscribe to my YouTube channel. Come back. I'll see you again. Bye.

不要忘記訂閱我的YouTube 。回來。我們將會再見的。掰掰。