「as」正確用法是？來搞懂 as 的6大用法！（含例句）

Hello, everyone! 我是英文庫的 Celine 🙂，今天來跟我一起搞懂 as 的 6 大用法吧！

相信 as、for、to、with 等功能詞是很多人學英文時很頭痛的地方，因為它們通常有很多不同的語意，讓人常常覺得很混亂！😓 不過別擔心，英文庫會幫大家整理出來各個功能詞的用法，讓你不再傻傻分不清楚啦！趕快來瞧瞧吧！

今天要談的是 as，它主要用作「介系詞」或「從屬連接詞」，以下會做更詳細的說明，記得一定要看例句示範喔！

as 詞性	中文意思
介系詞	1. 以…的身分、作為、當作
連接詞	2. 由於、因為
	3. 當…時
	4. 隨著…
	5. 依照、如同、像是、和…一樣
	6. 雖然、儘管、即使

1. as 表示「以…的身分、作為、當作」

as 用作介系詞，後面會加上名詞或名詞片語。

Catherine works as a waitress in the restaurant.
凱瑟琳在餐廳擔任一名服務生。

If we clear out the garage, you can use it as a studio.
如果我們清空那個車庫，你就可以把它當作攝影棚用了。

The news that Kobe Bryant died in a crash came as quite a shock to many people.
柯比·布萊恩死於空難的這個消息，對很多的人們來說是個很震驚的事件。

On Christmas, the principal dressed up as Santa Claus.
在聖誕節時，那個校長裝扮成聖誕老人。

As one of the family members, you should help do some household chores.
身為家中成員之一，你應該要幫忙做點家事。

視Ａ為Ｂ
regard / view / see / look upon / think of / refer to A (某人/事物.) as B (形容詞/名詞)

此用法會搭配以上的動詞，as 後方可以加形容詞或名詞。

Smartphones are looked upon as necessities in our modern society.
智慧型手機在我們的現代社會被視為必需品。

Some people regard the death penalty as inhumane.
有些人認為死刑是不人道的。

2. as 表示「由於、因為」

as 用作從屬連接詞，此時 as 與 since 或 because 意義相近，但更為正式一點，可以放在句首或句中。

As the weather was so bad last weekend, we had to delay our journey.
因為上週末的天氣太差了，所以我們需要將旅程延期。

I decided to go home as it was getting late.
我決定要回家了，因為時間漸漸晚了。

3. as 表示「當…時」

as 用作從屬連接詞，此時的 as 與 when 或 while 意義相近，表示兩件事同時發生，as 可以放在句首或句中。

As we left the restaurant after lunch, it started to rain heavily.
當我們用完午餐要離開餐廳時就開始下起大雨了。

All the people cheered as they reached the summit of Jade Mountain.
當大夥們攻上玉山頂峰時，大家都在歡呼。

I saw Linda as I was getting off the bus yesterday.
我昨天下公車時恰巧看到琳達。

Just as I was lying down on the bed to relax, the phone rang.
正當我躺在床上準備要好好放鬆時，電話響了。

4. as 表示「隨著…」

as 用作從屬連接詞，在此表示兩件事隨著時間的推移在做變化，as 可以放在句首或句中。此用法可以用介系詞「with + 名詞」替換。

As technology advances, our lives are getting more convenient.
= With the advancement of technology, our lives are getting more convenient.
隨著科技的進步，我們的生活也愈來愈便利。

As the economy develops rapidly, the problems of pollution are getting worse.
= With the rapid development of the economy, the problems of pollution are getting worse.
隨著經濟發展迅速，污染的問題也愈趨嚴重。

Hugh Jackman gets more attractive as he gets older.
隨著年齡的增長，休傑克曼變得愈來愈有魅力。

💡 延伸閱讀：「with」正確用法是？來看例句搞懂各種用法！

5. as 表示「依照、如同、像是、和…一樣」

as 用作從屬連接詞，此時 as 與 like 意義相近，但 as 不能用在有比較意味的句子，如：Like most students, Tim doesn’t like homework.（如同大多數的學生，提姆不喜歡回家作業。）此句的 like 無法用 as 取代。

The coach told me not to ask any questions, just to do as he said.
教練要我不要問任何問題，就依照他說的做就好。

Do in Rome as the Romans do.
入境隨俗。（諺語）

As you said, the air quality was pretty bad this morning.
如同你所說的，今天早上的空氣品質真的非常糟糕。

Don’t touch anything at the scene of the crime. Leave everything as it is.
不要碰觸案發現場的任何東西，讓所有物品保持原狀。

As you sow, so shall you reap.
種瓜得瓜，種豆得豆。/ 一分耕耘，一分收穫。（📖 sow – 耕種；reap – 收割）
（ *此句話為較正式的用句。）

6. as 表示「雖然、儘管、即使」

as 用作從屬連接詞，此時 as 與 though 意義相近，為讓步語氣。要特別注意的是，副詞子句中做修飾的形容詞或副詞需置於句首，形成倒裝語序，但主要子句不用倒裝。

🔺如果在句首加入 As 會讓句子變得比較口語化喔。

(As) Young as the child is, he knows how to take care of his sister.

(As) Tired as Mom was, she still cooked dinner for me.

(As) Old as the car is, it runs pretty well.

(As) Hard as Jenny studied, she couldn’t pass the math exam.

那個小孩雖然還小，就知道要如何照顧她妹妹。

媽媽即使很累，她還是煮晚餐給我。

那輛車雖老舊，卻還是運轉地不錯。

珍妮雖然很用功念書，但她還是沒辦法通過數學考試。

📖 此用法的語意和 although/though 的句型相近，所以可以互相替換，例句如下：

Although Andrew was sick, he came to the meeting.
= Sick as Andrew was, he came to the meeting.
雖然安德魯生病了，他仍然去開會。

▸ 特別需要句型架構的讀者可以參考：

Though/ Although + S + V + adj./adv. …, S + V

= adj./adv. + as/ though + S + V…, S + V

–
以上就是 as 的六大用法，你可能會想問，as 有這麼多意思，放在句子時怎麼知道是哪一個呢？🤔

其實這並不難，你可以先從 as 後面的字判斷，如果是接一個句子，那 as 就是當連接詞，接著就可以從句意或上下文判斷，因為 as 的各個意思相差很多，所以通常讓句子合理的意思只會有一個。而多閱讀英文也會讓你判讀的時間更短且更精準喔。

小試身手 ✏️

看完 as 的主要用法後，馬上來測試一下自己是不是完全理解了呢～
下面有八個句子，請你根據句意判斷 as 在句中的意思及詞性為何，練習完再往下對答案喔。

As a citizen, you have to pay taxes to the government.
As time goes on, Jack will understand what his dad said.
Old as Mr. Smith was, he still worked very hard.
Columbus is famous as a YouTuber.
As you are in poor health, you should not stay up late.
I saw Crowd Lu as I was shopping yesterday. He was so cute and friendly.
Tai Tzu Ying, as we had expected, won first prize in the badminton competition.
Steve is thought of as the smartest person in his family.

💡 解答：

	as 的詞性及意思	中文翻譯
1	（介系詞）身為、作為	身為一個公民，你必須繳稅給政府。
2	（連接詞）隨著、當	隨著時間過去，傑克將會理解他爸爸所說的話。
3	（連接詞）雖然、儘管	雖然史密斯先生很年長了，他工作仍然很認真。
4	（介系詞）身為、作為	哥倫布以身為 YT 影片創作者而聞名。
5	（連接詞）因為	因為你的健康狀況不好，你不應該熬夜。
6	（連接詞）當…時	我昨天在逛街時看到盧廣仲欸。他既可愛又親切。
7	（連接詞）如同、依照	如同我們期待的，戴資穎在羽球比賽中得了第一名。
8	（介系詞）作為、當作	史蒂夫被視為他家族中最聰明的人。

That’s All for Today

有這麼多用法的 as 真的很容易在文章中看到，這次的內容希望你都搞懂了，不再為了 as 的意思傷腦筋，未來也能在寫作上運用自如！

想了解其他跟 as 有關的用法可以參考以下文章喔：
👉 來搞懂 as long as、as soon as、as far as 的用法！ (含例句）
👉「至於」英文怎麼說？As to 還是 As for？