区分一下这三句反意疑问句,都含must!!!~~~
发布网友
发布时间:2024-05-06 12:38
我来回答
共3个回答
热心网友
时间:2024-07-11 19:29
“must”在反意疑问句中的用法
1. must作“必须”解释, mustn't作“不允许”解释时
They must clean the floor, mustn't they/needn't they?
他们必须擦地板,是不是?
We must stay at home, mustn't we?
我们必须留在家里,是不是?
We mustn't be late, must/may we?
我们不许迟到,是不是?
2. must表示推测时:
They must be playing basketball, mustn't they?
他们肯定在打篮球,是不是?
参考资料:http://www.toxue.com/html/qtbc/yftd/2006/0611/7600.html
逗号前的陈述句中的谓语部分含有“推测”性的must 时,先把must去掉再看后面的动词该用什么时态和形式。
Her mother must be a teacher, isn't she?
must去掉,后面的动词应该是is 。
She must have read the novel, hasn’/didn't she? must去掉 后面的动词应该是has read 或 read 。因为用must对现在完成时和一般过去时的推测都是must have done 形式。句子中有时间状语时比较容易区别。
He must have come now ,hasn't he?
He must have come last week, didn't he?
但是:You must(必须) work hard next time ,musn't you?
You must(必要) go home right now , needn't you?
热心网友
时间:2024-07-11 19:29
1、must be 词组:肯定是
2、must - needn't 必须 - 不必
3、mustn't 不准,不允许,禁止
热心网友
时间:2024-07-11 19:30
1你一定....表示猜测
2你必须...肯定句
2你不许...否定句