For about US$20, you can get a ground coffee bath; that is, they "boil" you in coffee.

大約美金二十塊, 你就可以洗一個研磨咖啡澡; 也就是說, 他們會把你放在咖啡裡『煮』。

上列句中的介詞for表示『當作……的價值』之意, 有『等價值交換』的概念, 之後接表金錢的名詞, 用來表示『價格』。

例: I bought this book with fifty dollars. (╳)

　→I bought this book for fifty dollars. (○)

　(這本書我是用五十塊錢買的。／我買了這本書當作五十塊錢的價值。)

　With only fifty dollars, you can take in two movies in that theater. (╳, 此處會誤解為『你跟五十元可一塊兒在那家戲院一次看兩部電影。』)

　→For only fifty dollars, you can take in two movies in that theater. (○)

　(只要五十塊錢，你就可以在那家戲院一次看兩部電影。)

注意:

表『吃……當作早/午/晚餐』的介詞亦用for來表示。

例: What would you like to eat for dinner?

　(你晚餐想吃什麼？／你想吃什麼當作晚餐？)

　Peter had a big steak for lunch.

　(彼得午餐吃了一塊很大的牛排。)

比較:

例: We were at breakfast when the telephone rang.

　= We were having breakfast when the telephone rang.

　(我們正在吃早餐這時電話鈴響了。)

They believe it helps cure diseases.

他們相信洗咖啡浴有助於治療疾病。

有關動詞help的重要用法如下:

a. help + (to) + 原形動詞　　幫助/忙……

　　＊上列句中的help即屬此用法。

例: Mother wants me to help (to) do the dishes.

　(媽媽要我幫忙洗碗盤。)

　Could you help (to) correct this composition?

　(你可以幫忙改這篇作文嗎？)

故: They believe it helps cure diseases.

　= They believe (that) it helps to cure diseases.

b. help + 人 + (to) + 原形動詞　　幫某人……

例: Little Johnny helped his father (to) wash the car.

　(小強尼幫爸爸洗車子。)

　My friends helped me (to) paint my new house.

　(我朋友幫忙我油漆新房子。)

c. help with + 名詞　　幫助/忙……

例: Tom agreed to help with our plan.

　(湯姆同意幫助我們的計畫。)

　Father never helps with the housework.

　(老爸從來不幫忙做家事。)

d. help + 人 + with + 名詞　　幫某人……

例: My older brother always helps me with my homework.

　(我哥哥總是幫我做家庭作業。)

　In the beginning, the manager had to help the new worker with his job.

　(剛開始的時候，經理得幫助那位新進員工做他的工作。)