摘要：详解：表示“正要做某事，马上要做某事”，主语一般是人，时间距离很近，后面不可跟表示将来时间的状语，如soon，at once等，常与when从句连用。

中考英语中表示“正要做某事”的必备句型及词组搭配主要有“be about to do sth.”和“be on the point of doing sth.”，以下是相关详解及双语例句：

be about to do sth.

- 详解：表示“正要做某事，马上要做某事”，主语一般是人，时间距离很近，后面不可跟表示将来时间的状语，如soon，at once等，常与when从句连用。

- 双语例句

- I was about to go to bed when my mother came back.（我正要上床睡觉，这时我妈妈回来了。）

- She is about to leave for school.（她正要去学校。）

- They were about to start the meeting when the boss arrived.（他们正要开始开会，这时老板到了。）

- He is about to have lunch.（他正要吃午饭。）

- The plane is about to take off.（飞机正要起飞。）

- We were about to go out when it began to rain.（我们正要出去，这时开始下雨了。）

- The train is about to leave.（火车正要出发。）

- She was about to cry when she heard the good news.（她正要哭的时候听到了这个好消息。）

- He is about to give a speech.（他正要发表演讲。）

- They are about to play basketball.（他们正要打篮球。）

be on the point of doing sth.

- 详解：意为“正要做某事，即将做某事”，与“be about to do sth.”意思相近，但更强调在某个特定的时间点或时刻正要进行某事。

- 双语例句

- I was on the point of leaving when he called me.（我正要离开的时候他给我打电话了。）

- She is on the point of finishing her homework.（她正要完成她的家庭作业。）

- They were on the point of having dinner when the guests arrived.（他们正要吃晚饭的时候客人到了。）

- He is on the point of making a decision.（他正要做决定。）

- The company is on the point of launching a new product.（公司正要推出一款新产品。）

- We were on the point of going hiking when the weather turned bad.（我们正要去远足，这时天气变差了。）

- The project is on the point of being completed.（项目正要完成。）

- She was on the point of singing when the microphone broke.（她正要唱歌，这时麦克风坏了。）

- He is on the point of starting his own business.（他正要开始自己的事业。）

- They are on the point of moving to a new house.（他们正要搬到新房子去。）

来源：蒙古元素