3. We' ll hold a meeting tomorrow.

= We _____ ____ _____ a meeting tomorrow. = A meeting is ______ ______ ______ tomorrow.

4. 这趟火车将于上午10：25到达北京。

_______________________________________________________________________________

【答案】

1. are to go

2. to come

3. are to hold; to be held

4. The train is to arrive in Beijing at 10: 25 am.

【解析】本题主要练习重要句式be to do的用法。

2. That made it possible for life to begin to develop. 那使生命的生长发育成为一种可能。

　　此句中的made后跟带形式宾语it的复合结构，其中it是形式宾语，真正宾语是不定式复合结构，"for life to begin to develop"，宾语补足语是possible。

She made it her business to find out who was responsible. 她非要弄清楚是谁的责任不可。

　　常用于此结构的动词还有think，feel，find，consider等。

We make it a rule to get up at 6 o' clock every morning. 我们养成了每天早上6点钟起床的习惯。

I find it hard to get along with him. 我发现很难跟他相处。

He found it impossible to leave Germany for the USA. 他发现不可能离开德国去美国了。

I think/find/feel/consider it my duty to help you. 我觉得我有责任帮助你。

完成句子或翻译。

1. We ______ ______ ______ ______ (规定) to get up at 6 o' clock every morning.

2. I ______ ______ ______ (发现很难) to get along with him.