• prep. 為，為了；因為；給；對于；至于；適合于
• conj. 因為

來自PIE*per, 向前，穿過，詞源同far, ford. 后主要用做介詞或副詞使用，與fore在中古英語時期才開始產生詞義上的差別。

for

for: [OE] For comes from a prehistoric Germanic *fora, which denoted ‘before’ – both ‘before’ in time and ‘in front’ in place. For itself meant ‘before’ in the Old English period, and the same notion is preserved in related forms such as first, fore, foremost, former, from, and of course before. Germanic *fora itself goes back to Indo- European *pr, source also of Latin prae ‘before’, pro ‘for’, and primus ‘first’ (whence English premier, primary, etc), Greek pará ‘by, past’, pró ‘before’, and protos ‘first’ (whence English protocol, prototype, etc). and English forth and further.
=> before, first, fore, former, forth, from, further, premier, primary

for (prep.)

Old English for "before, in the sight of, in the presence of; as far as; during, before; on account of, for the sake of; in place of, instead of," from Proto-Germanic *fur "before; in" (cognates: Old Saxon furi "before," Old Frisian for, Middle Dutch vore, Dutch voor "for, before;" German für "for;" Danish for "for," f?r "before;" Gothic faur "for," faura "before"), from PIE *pr- (see fore (adv.)).

From late Old English as "in favor of." For and fore differentiated gradually in Middle English. For alone as a conjunction, "because, since, for the reason that; in order that" is from late Old English, probably a shortening of common Old English phrases such as for ton ty "therefore," literally "for the (reason) that."

1. For what do we live, but to make sport for our neighbours, and laugh at them in our turn?

我們活著是為了什么？不就是給鄰居當笑柄，再反過來笑他們。

來自《傲慢與偏見》

2. Sometimes things have to fall apart to make way for better things.

有時候要到達谷底，才會慢慢變好。

來自金山詞霸 每日一句

3. Do not wait for good things to happen to you. You need to walk towards happiness.

不要等待好事降臨，你要向幸福進發。

來自金山詞霸 每日一句

4. Instead of complaining about what's wrong, be grateful for what's right.

別抱怨不好的事，要對好的事心存感恩。

來自金山詞霸 每日一句

5. Good luck is when an opportunity comes along and you're prepared for it.

好運就是當機會來臨時，你早已做好了準備。

來自金山詞霸 每日一句