适用于高二或高三各期
“must”表推测的反意疑问句最佳掌握法
“must”表推测的反意疑问句是高考考点之一，一般资料把它概括为三种情形：对当前状况的推测，对过去情况的推测和对现在完成情况的推测。学生对后两种情况往往难以界定。现介绍一种最简洁并确保万无一失的方法，即先将该句变成表达事实的句子，再形成反意疑问，便可得出正确形式。请看以下各例：
1. She must be in the office.
事实：She is in the office.
反意疑问: isn’t she?
2. He must go by bus.
事实：He goes by bus.
反意疑问: doesn’t he?
3. You must have seen the film last week.
事实：You saw the film last week.
反意疑问: don’t you?
4. They must have been here yesterday.
They were here yesterday.
反意疑问: weren’t they?
5. He must have waited here for a long time.
事实：He has waited here for a long time.
反意疑问: hasn’t he?
6. You must have been to the USA.
You have been to the USA.
反意疑问: haven’t you?
是不是很简单？检测一下吧。
1. Look, the road is wet. It must have rained last night, ________?
2. You must be a teacher, _______?
3. They must have finished the work, __________?
4. Why isn’t he here? He must have missed the train, ________?
5. Her eyes are red. She must have cried, _________?
Keys: 1. didn’t it 2. aren’t you 3. haven’t they 4. didn’t he 5. didn’t she
责任编辑：李芳芳