We’re going to meet at the post office / at the station / at the bank.
我們將在郵局／車站／銀行碰面。
b. at 與度數、程度、價格、年齡等與數字有關的名詞並用。
at the price / cost / expense of + 數字 以⋯⋯的價格
at the age of + 年齡 在⋯⋯歲的時候
at the speed of + 速度 以⋯⋯的速度
The painter is only willing to sell his masterpiece at the price of US$30 million.
這位畫家只願意以三千萬美元的價格出售他的傑作。
Sandy had her first child at the age of 30.
珊蒂三十歲時生了第一個小孩。
2. by
a. 表「在⋯⋯旁」，等於beside。
The waiter seated us by the window.
服務生安排我們坐在窗邊。
b. 表「藉由⋯⋯（手段、方法、媒介等）」。
Andy succeeded by working hard.
安迪藉由努力而成功。
3. for
a. 表「為了⋯⋯（目的）」。
Don’t blame Matt. After all, he did it for you.
不要責怪麥特。畢竟，他這樣做是為了你。
b. 表「前往⋯⋯」。
Rachel left Taipei for Kaohsiung yesterday.
瑞秋昨天離開臺北前往高雄。
c. 表「一段時間或距離」。
I have been learning English for three years.
我學英文已經三年了。
4. from
a. 表「從⋯⋯」。
It takes more than an hour to fly from Taipei to Hong Kong.
從臺北飛往香港要花一個多小時。
I couldn’t figure out what Larry meant from his words.
我無法從賴瑞的話中了解他的意思。
b. 表「免於⋯⋯」，與表禁止、阻止、保護等意思的動詞並用。
ban / bar / prohibit sb from... 禁止某人（做）⋯⋯
prevent / stop / keep sb from... 阻止某人（做）⋯⋯
protect sb/sth from... 保護某人／某物免於⋯⋯
The law prohibits stores from selling cigarettes to minors.
這條法律禁止商店販賣香菸給未成年人。
1. John left home _____ the age of 18 and didn’t come back until he was 50.
(A) at (B) for (C) to (D) in
2. _____ the help of the internet, we can find the information we need within seconds.
(A) On (B) By (C) For (D) With
3. We should do something to prevent Gary _____ drugs.
(A) to take (B) of taking (C) from taking (D) not to take
