1.gone: adj .“丢了，没了，不在场证明”，再也没有回来，不再存在。也可以委婉地表达“死了”、“用完了，用完了”。不能成为定语。

Her fever is gone, but still coughs.

她已经退烧，但是还咳嗽。

We didn't know how we would cope once the money had gone.

一旦钱花光了，我们就不知道该怎么办了。

Oh！ It is gone！Where is the rabbit？

哎呀，没啦！兔子呢？

While he was gone she had tea with the Colonel.

他不在时她跟上校一起喝了茶。

The bad past is gone.

糟糕的过往，一去不复返了。

The days are gone when you could leave your door unlocked at night.

夜不闭户的时代已经一去不复返了。

You'll be sorry you said that when I'm dead and gone.

我死后你会为你说的话感到后悔的。

Patients' medical notes have gone missing.

患者的病历丢失了。《牛津高阶英汉双解词典》

2.lost：adj.“丢失”，难以找回；迷路的;失去的;丢失的;迷失的;丧失的;无法恢复的;得不到的;无法再找到的;无法再造的（可以做定语）

一去不复返可能性达到90%。

可以做动词

a lost book.

一本找不着的书

When he left the country,I knew the money I’d lent him was lost forever.

在他出国的时候，我就知道我借给他的钱是永远失去了。

I'm still looking for that lost file.

我还在找那份丢失的档案。

Your cheque must have got lost in the post.

你的支票一定是邮寄中遗失的。

She's trying to recapture her lost youth .

她在努力追回逝去的青春。

He seemed to pine for his lost youth...

他似乎很怀念逝去的青春。

He regretted the lost opportunity to apologize to her.

他后悔错过了向她道歉的机会。

I lost my puppy.

我的小狗丢了。

Dreams of finding the lost treasure almost came true.

找到丢失的宝藏的梦想差点实现了。

lost 表示迷路：

He doesn't know London very and he lost his way.

他对伦敦不熟，迷路了。

They hugged each other like a couple of lost children

他们相互紧抱在一起，就像一对迷路的孩子。

be lost in 在……中迷路，迷失在，陷入（沉思等）

Lost in the mountains for a week,the two boys wre finally saved by the local police.

在大山里迷路一周后，这两个男孩被当地警察救出来了。

3.missing：“不见了”，强调不在原处了，暂时不在或找不到。有时可表示“应有而缺少”：

Returning to my room,I found my watch missing.(形容词作宾补)

回到房间，我发现手表不见了。

形容词missing有个特点，作定语可以放在名词之前，也可以之后：

The book had two pages missing/two missing pages.

那本书缺两页。

My dictionary is mi’s taken it away?

我的词典不见了。谁拿了？

Foe more detailed information of the missing girls,please visit our webite.

想了解更多失踪女孩子们的信息，请访问我们的主页。

The money in the cafe has gone missing. (形容词作宾补)

保险柜里的钱不见了。

She called the police after finding the gold missing.

发现黄金丢失之后，她报了警。

注意：missed 是miss过去分词，用作定语或表语时，含义“错过的，漏掉的”：

An opportunity missed is gone for ever.

丢掉的机会是永不会再来的。

Williams knew that she had missed her chance of victory...

威廉姆斯知道她已经失掉了夺取胜利的机会。

I had already missed my flight, and the next one wasn't until the following morning...

我已经错过了我的航班，下一班飞机得等到明天早晨。

It was an opportunity not to be missed.

机不可失，时不再来。

If you don't buy now, you may find that you've missed the boat.

你如果现在不买，你会错失良机的。

实战训练：

(1) _______ time will never be back again.

(2) Someone had told the police that his child was _______ .

(3)The old days are _______ forever.

(4)John complained to the bookseller that there several pages _______ in the dictionary.(研考)

(5)When some money went _______ from the bank,O.Henry was believed to have stolen it. (高考)

(6)The _______boy was last seen playing near the East Lake.(高考)

答案：

Lost; missing; gone; missing; missing;missing