for

为了；赞成；因为

Those people are fighting for their freedom.

那些人是为了他们的自由而战。

Are you for or against the proposal?

你是赞成或反对本提案？

Jerry decided to stop for lunch first,for he was feeling hungry.

杰瑞决定先停下来吃午餐，因为那时他肚子饿了。

because

因为

I like him because he is polite.= because he is nice,I like him.

因为他很有礼貌，所以我喜欢他。

Because of the bad weather, we couldn't go anywhere.

因为天气很糟，我们哪里也去不了。

will

将要；意志；遗嘱

Mr. Smith will arrive in New York tomorrow morning.

明早史密斯先生将会抵达纽约。

Nobody can question his will to win.

没有人可以质疑他的求胜意志。

The man made his final will a month before he died.

该名男子在他死前一个月立下最后遗嘱。

You may go or stay at will.

你可以随意去留悉听尊便。

can

能够；可以；金属罐；装（食物）于罐头内

Can you speak French?

你会说法文吗？

You can't talk loudly in the library.

在图书馆内不能大声喧哗。

John drank ten cans of beer at the party.

约翰在派对上喝了10罐啤酒。

My mother likes to can fruit at the end of (the) summer.

每年夏末，我母亲总爱将水果制成罐头。

man

男人;人;人类

Everyone agrees that John is a nice man.

大家都同意约翰是个好男人。

All men are born equal.

人人生而平等。

Man is the cleverest creature on Earth.

人类是地球上最聪明的生物。