1. at (the) best至多，充其量，就最樂(lè)觀的一面來(lái)看。如：
Life is short at best. 生命再長(zhǎng)也是短暫的。
At best a few hundred people attended the meeting. 充其量只有幾百人參加了會(huì)議。
We can’t arrive before Friday at best. 我們無(wú)論如何也無(wú)法在星期五以前趕到。
2. do [try] one’s best 盡力， 竭盡全力。如：
As long as you do your best, we’ll be happy. 只要你盡力，我們就滿意了。
It doesn’t matter if you don’t win---just try your best. 贏不了也沒(méi)關(guān)系，只要努力即可。
注：其后有時(shí)可接不定式。如：
We did our best to help them. 我們盡力幫了他們。
3. had best 最好，應(yīng)該。如：
You had best stay here. 你最好呆在這兒。
I think we had best sell it. 我想我們還是把它賣掉的好。
注：had best 與 had better 同義。
4. It’s best for sb to do sth 某人最好去做某事。如：
It’s best for us to start early. 我們最好早點(diǎn)出發(fā)。
It’s best for you to buy a dictionary. 你最好買臺(tái)電腦。
5. make the best of 充分利用，盡量往好處做，將就用。如：
We must make the best of the fine weather. 我們必須要充分利用這好天氣。
The only thing to do now is to make the best of things. 現(xiàn)在唯一的辦法就是隨遇而安。