be about to, be on the brink/verge/point of 的用法
be about to
be about to + 不定式，表示某件事将会在不久的将来发生。
The teacher is about to score our test papers. 老师要给我们的试卷打分。
Some TV games are about to disappear from the market. 一些电视游戏即将从市场上消失。
be on the brink/verge/point of
我们可以用 be on the brink of, be on the verge of 或 be on the point of，来表示某件事将很快就会发生。
The current President is on the brink of impeachment. 现任总统处于弹劾边缘。
Two developing countries are on the brink of war after the people’s attacks. 受人民袭击后，两个发展中国家处于战争边缘。
When I saw my grades, I was on the verge of tears. 当我看到自己的成绩时，我快要掉眼泪了。
My score is on the point of passing the national exam. 我的分数快要到国家考试及格线了。
be due to 的用法
be due to + 不定式，可以表达某件计划或预期会发生的事。
The document is due to arrive tomorrow morning at the Post office. 文件定于明天早上送到邮局。
Greece is due to repay around £6 billion to its creditors next year. 希腊将于明年向债权人偿还约 10 亿英镑。
be to 的用法
be to + 不定式，可以用在不同情况。
1. 正式安排
Be to + 不定式，通常会用在新闻报导来表达正式安排和计划或预期会发生的事件。意思像是 “ it is expected”
Prince William is to visit Paris for the first time since his mother died. 威廉王子将在母亲去世后首次访问巴黎。
Six care homes for the elderly are to close by the end of April. 六家养老院将于四月底关闭。
2. 正式指导和命令
也可以用 be to + 不定式，来表达正式指导和命令。但用于否定形式，则表达禁止。
All employees are to attend a health and safety orientation at the end of the week. 所有员工都将在周末参加健康和安全培训。
You are not to leave this room until agree. 在我同意之前你不能离开这个房间。
3. 用于 if 从句
在 if 从句通常会用 be to + 不定式。在这些例子中，(在主要从句中)表达要完成某件事，才能(在 if 从句中)达到期望的结果 。
We need to be open to everybody’s opinion if we are to avoid repeating the mistakes of the past. 如果我们要避免重复过去的错误，我们需要对每个人的意见持开放态度。
If he is to succeed, he will need to learn to represent the interests of all Americans. 如果他要成功，他将需要学会代表所有美国人的利益。
Be bound to, be likely to (可能性)的用法
be bound to
可以用 be bound to +不定式，来表达某件事非常肯定或非常可能发生。
They are bound to like him. He is such a sweet guy. 他们一定会喜欢他的。他真是个可爱的家伙。
His new film is bound to win the heart of every romantic out there. 他的新电影一定会赢得所有浪漫主义者的心。
be likely to
be likely to + 不定式，表达某件事可能会发生。也可以用 It + be likely that + 从句。
The government is likely to pass new regulations very soon. 政府很可能很快就会通过新法规。
It’s likely that the company will have to pay for the damages. 很可能该公司将不得不支付损害赔偿金。
Be unlikely + 不定式，表达某件事很可能不会发生。也可以用It + be likely that + 从句。
They are unlikely to find who did the crime. 他们不太可能找到犯罪者。
It’s unlikely that he is the best player on the team. 他不太可能成为球队中最好的球员。
表达未来的其他方式 – 练习题
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