How might 'could' express a past or hypothetical opportunity?

Dec 29, 2021 ... "The original test could detect the presence of SARS-CoV-2 with very high specificity," – meaning the test does its job very well. A PCR ... May 25, 2024 ... What's the difference between can and could? ... “Can” and “could” are modal verbs that provide further information about the main verb. “Can” is ... Jan 18, 2021 ... You don't create backlinks - they are created automatically when you link to a note. Tags are keywords you enter that can be used as search ... Nov 19, 2015 ... Can and could are two modal verbs that express possibility and ability. The main difference between can and could is that could is the past form of can. Nov 4, 2018 ... Knowing the differences between urgent care centers, emergency departments and walk-in clinics can save time and money, or even be lifesaving. Nov 20, 2024 ... “Can” is used for expressing ability, permission, or possibility in the present tense. “Could” is often the past tense of “can” and is used for the same ... May 9, 2023 ... Do you use “can” and “could” correctly in English? Join me and learn how to use these two important modal verbs, in terms of grammar, ... Can is straightforward and direct, while could adds a layer of politeness or implies a condition or hypothetical scenario. Also Visit : Prep with Harshita. What ... Light bleeding could be a sign that you successfully conceived…or it might ... How Can I Tell the Difference between Implantation Bleeding and My Period? Difference between CAN and COULD ; 3. Can is used to refer to the present and the future. Could can be used in all the tenses: present, past, and future ; 4. CAN ...