should modal verb - Definition, pictures, pronunciation and usage …
https://www.oxfordlearnersdictionaries.com/definition/english/should
WEBshould. modal verb. OPAL W. /ʃəd/, strong form /ʃʊd/ Verb Forms. used to show what is right, appropriate, etc., especially when criticizing somebody’s actions. You shouldn't drink and drive. He should have been more careful. A present for me? You shouldn't have! (= used to thank somebody politely) Take your English to the next level.
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