FOR and OF 之分別

FOR & OF can both mean 因為
(of cos they have other meanings too)

Their main difference is that FOR is a conjunction 連接詞, which is used to connect two sentences.(eg: and, as well as, but, while, when)

While OF is a preposition.
(eg: in, on, at, inside, into, onto)

FOR (conj.)
1. 因為,由於
We must start early, for it will take two hours to drive to the airport.
我們得早點動身,因為開車去機場得花兩個小時。

OF (prep.)
9. 因為
Her son died of hepatitis.
她兒子因患肝炎而死。

Remarks (other meanings of FOR & OF):

FOR (prep.)
1. 為,為了
They fought for national independence.
他們為民族獨立而戰。
This letter is for you.
這是你的信。
2. 代替;代表
We used boxes for chairs.
我們用箱子當椅子坐。
3. 因為,由於
I am sorry for what I said to you.
我後悔不該對你講那些話。
4. 在(指定時間)
The meeting is arranged for 9 o'clock.
會議安排在九點鐘。
5. (表示時間,距離等)達,計
You can see for miles from the roof.
你站在屋頂上可以看到數英里之外。
6. 對於,關於;在...方面
I am too old for the job.
我年紀太大,做不了這工作。
7. 為得到,為贏得
He sent the waiter for a packet of cigarettes.
他讓侍者去拿一盒香煙。
8. 以...為代價;以...交換
He sold his car for 500 dollars.
他以五百元把車賣了。
9. 當作,作為
Do you take me for a millionaire?
你是不是把我當百萬富翁?
10. 贊成;支持;傾向於
Are you for the government or against it?
你是支持還是反對政府?
11. 朝...方向去;往,向
He left for Taipei.
他出發去臺北。
12. 就...而言
She is sophisticated for her age.
就年齡而言她是世故了一點。
conj.
1. 因為,由於
We must start early, for it will take two hours to drive to the airport.
我們得早點動身,因為開車去機場得花兩個小時。


OF (prep.)
1. ...的,屬於
One of the legs of the table is broken.
桌子的一條腿壞了。
Mr. Brown is a friend of mine.
布朗先生是我的朋友。
2. 用...做成的;由...製成
The house is of stone.
這房子是石建的。
3. 含有...的;裝有...的
4. ...之中的;...的成員
Of all the students in this class, Tom is the best.
在這個班級中,湯姆是最優秀的。
5. (表示同位)
He came to New York at the age of ten.
他在十歲時來到紐約。
6. (表示受格關係)
He gave a lecture on the use of solar energy.
他就太陽能的利用作了一場講演。
7. (表示主格關係)
We waited for the arrival of the next bus.
我們等待下一班汽車的到來。
I have the complete works of Shakespeare.
我有莎士比亞全集。
8. 來自...的;出自
He was a graduate of the University of Hawaii.
他是夏威夷大學的畢業生。
9. 因為
Her son died of hepatitis.
她兒子因患肝炎而死。
10. 在...方面
My aunt is hard of hearing.
我姑媽耳朵有點背。
11. 【美】(時間)在...之前
12. (表示具有某種性質)
It is a matter of importance.
這是一件重要的事。