Question

Difficulty: EasyModal Auxiliaries and Expressing Modality

Complete the sentence below by filling in the blank with the most appropriate modal verb to express advice or strong recommendation.

Answer:If you experience severe symptoms, you 【should】 consult a qualified physician without delay.

Answer

should
The modal auxiliary 'should' (or 'must' / 'ought to') appropriately expresses advice or strong recommendation in response to health symptoms.

Step-by-Step Solution

1
Analyze the context of the sentence to determine the intended modality.
The clause 'If you experience severe symptoms' sets up a condition requiring a recommendation or advice regarding health.
Modal auxiliary verbs such as 'should', 'must', or 'ought to' express advisability, recommendation, or duty in English.
2
Select the appropriate bare infinitive modal auxiliary that fits grammatically before 'consult'.
'should' correctly precedes the base verb 'consult' without requiring an additional particle like 'to'.
Standard modal auxiliaries (except 'ought') are followed directly by the bare infinitive of the main verb.

Key Concept

Expressing Advice and Recommendation with Modal Auxiliaries
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