【語法】as用法

作為… (介係詞 Preposition)
- 表示身分、職位或功能。
- 例句：She works as a waitress. (她的工作是作為一個服務生。)
用於比較；指稱程度 (副詞 Adverb)
- 常與另一個 as 搭配形成 “as… as…” (像…一樣…) 結構。
- 例句：I can’t run as fast as you. (我不能跑得像你一樣快。)
因為… (連接詞 Conjunction)
- 表示原因。
- 例句：As it was getting late, I decided to book into a hotel. (由於現在越來越晚了，我決定預約一家旅店。)
如同… (連接詞 Conjunction)
- 表示方式、情況與另一件事情相似。
- 例句：He got divorced, (just) as his parents had done years before. (他離婚了，就如同他雙親幾年前一樣。)
當…時候 (連接詞 Conjunction)
- 表示兩個動作或狀態同時發生，或一個動作伴隨另一個動作的變化。
- 例句：He gets more attractive as he gets older. (當他變老時顯得更有魅力。)
雖然 (連接詞 Conjunction) = Although
- 用於倒裝句結構，表示讓步，通常將形容詞或副詞提前。
- 例句：Angry as he was, he couldn’t help smiling. (雖然他很生氣但他還是忍不住地笑了。)

As long as 只要… / 長達…
- 表示條件 (只要在一段時間內…就會… / 只要達成某件事…就可以)：
  - 例句：I’ll remember you as long as I live. (只要我還活著，我就會一直記得你。)
  - 例句：We can play, as long as it doesn’t rain. (只要不下雨, 我們就能玩。)
- 表示時間長度 (長達…)：
  - 例句：The conference could be as long as four hours. (這個研討會根本就會長達四小時。)
As soon as 一…就…
- 連接兩個發生時間點相同或相近的事件。
- 例句：I’ll tell him as soon as I see him. (我一見到他就告訴他。)
As well as (conj.) 也；又
- 表示「除了…還有…」或「不但…也…」。
- 例句：She is a talented musician as well as being a photographer. (她不但是攝影師還是個很有才華的音樂家。)

As far as (conj.) 達到…的程度；就…而言

通常與動詞 “know,” “see,” “tell,” “concern” 等搭配。
例句：As far as I can know, this is the best choice we have now. (這是目前就我所知道我們最好的選擇。)

常用片語	中文意思	例句
As far as I know	就我所知 / 據我了解	As far as I know, the museum is closed on Mondays. (就我所知，這間博物館週一休館。)
As far as I can tell	據我判斷 / 依我看來	As far as I can tell, there are no problems with the new system. (據我判斷，新系統沒有任何問題。)
As far as I can see	據我觀察 / 我看來	As far as I can see, this is the only option left. (依我看來，這是唯一剩下的選項了。)
As far as I remember	就我記得 / 據我記憶所及	As far as I remember, we met ten years ago. (就我記得，我們是在十年前認識的。)

As if / As though 好像, 似乎；彷彿
- 陳述語氣 (描述事實或可能發生的事)：They stared at me as if I was crazy. (他們看著我就好像我已經瘋了一樣。)
- 虛擬語氣 (表示與事實相反或不可能)：I felt as though I’d been lying in the sun for hours. (我感覺就像我已經在陽光下躺了幾小時。) (這裡用過去完成式 ‘d been lying，帶有虛擬感，表示「彷彿」經歷了長時間。)

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