8.be to+不定式表示将来

提示：

请注意下列句子中的“be to do”结构是系表结构。

The goal is to explore and develop a new health care model for China．(人教

大纲版高三第75页)

目的是为中国的医疗保健探索和发展新的模式。

Perhaps the most important function of advertising is to introduce new products．(人教大纲版高三第40页)

广告最重要的职能也许是介绍新产品。

(1)这一结构的用法就是表示按计划安排即将发生的动作。

I'm to see him today at6 o'clock．

我准备六点钟去看他。

The book that I edited is to come out soon．

我校订的书很快就要出版了。

Where are we to stay tonight?

今晚我们住哪儿?

The Greens are to visit Japan next spring．

格林夫妇明年春季访问日本。

As I was to leave the next day，I went to bed early．

由于第二天我要离开，我很早就睡了。

提示：

如果过去将来的计划或安排没有实现，用“was/were to+不定式完成式”结构。这时有点接近于“was/were going to+不定式”结构，表示没有实现的过去将来的动作。

I was to have left the next day．

我本来是准备第二天离开的。

(2)表示“命令”、“禁止”、“必须”等情态意义。

What am I to do then?

我该怎么办?

You are not to smoke in the room．

你不要在这个房间里抽烟。

You are not to open it．

你不要打开它。

So，what was to be done?(人教大纲版高三第53页)

那该怎么办呢?

(3)表示不可避免将要发生的事，以及后来将要发生的事。

The book is nowhere to be found．

到处都找不到这本书。

You are never to meet that friend again．

你不要指望再看到他了。

He is to become a star in the future．

他将来定会成为明星的。

The worst was to come yet!(人教大纲版高二上第80页)

最坏的情况就要发生!

The few who had to go outside covered their mouths with masks，which were soon to become symbols of the epidemic．(人教大纲版高三第214页)

少数不得不外出的人也得戴上口罩，这很快成为流行传染病即将发生的标志。

(4)用于条件句，相当于“If．．want(s)”。

If we are to develop the world successfully，we must make sure that everyone is able to take part in the new world we create．(人教大纲版高二上第68页)

如果我们要成功地开发世界，就必须确保人人都能够参与到我们创造的新世界中来。

If we are to be there in time，we'll have to hurry up．

如果想准时到达那里，我们就得赶紧。

If there is to be a revolution，there must be a revolutionary army．

要革命就得有一支革命军队。