If the main clause has an auxiliary verb (including a 'modal' auxiliary verb like can, must), the question tag has the same auxiliary. If the main clause has be, this is also used in the question tag. If the main clause does not have an auxiliary verb (or be), do is used in the question-tag. Your example matches 1, so It must be her car, mustn

The 'MUST' calculator can be used to establish nutritional risk using either objective measurements to obtain a score and a risk category or subjective criteria to estimate a risk category but not a score. Please select which method of nutritional screening is to be used. It is recommended that objective measurements of height, weight, and
Cách dùng cấu trúc Must. 4. Cấu trúc Must đưa ra giả định, phỏng đoán. Ngoài các lớp nghĩa trên, cấu trúc Must còn hay được sử dụng khi người nói đưa ra một lời phỏng đoán, giả định về việc gì. Điều giả định đó rất dễ xảy ra, thậm chí chắc chắn sẽ diễn ra.
Answers. 1. You need not wait any longer.. 2. You must respect the national flag.. 3. She could read when she was three.. 4. I could solve the problem.. 5. She might come.. 6. You must not enter my home.. 7. You may go home.. 8. She can speak English.. 9. Glass can be blown.. 10. She need not pay for that call.. 11. Wars can break out at any time.. 12. I would rather stay at home than go to

In the bool query, we have the following fields: must. must_not. should. filter. Must is analogous to the boolean AND, must_not is analogous to the boolean NOT, and should is roughly equivalent to the boolean OR. Note that should isn't exactly like a boolean OR, but we can use it to that effect. And we'll take a look at filter later on.

This is the NOT or minus (-) operator of the query DSL. In this case, we do a simple match query, looking for documents that contain the term "city." This is the must_not clause, so matching documents will be excluded. should. Up until now, we have been dealing with absolutes: must and must_not. Should is not absolute and is equivalent to
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use of must and must not