Could Japan's Cutting-Edge Medicine Hold the Key to a Cancer Cure? We weren’t able to create a summary for you. Refresh your page to try again. The meaning of COULD is —used in auxiliary function in the past, in the past conditional, and as an alternative to can suggesting less force or certainty or as a polite form in the present. How to use … We use could to ask for permission. Could is more formal and polite than can: Could I ask you a personal question? Apr 9, 2025 · Learn 8 expert ways to use could in English—past abilities, polite requests, regrets, and more—with real examples and clear practice tips. Learn about the modal verbs can and could and do the exercises to practise using them. Learn how to use could, would and should in English with clear rules, examples, and tips—perfect for Class 6-12 students and exam preparation. Mar 23, 2023 · Learn the difference between can vs. could and how to use each of them in a sentence, with examples of each word used correctly. Nov 5, 2025 · Learn the difference between can vs could with meanings and examples to improve your English grammar and speaking skills. COULD definition: a simple past tense of can. See examples of could used in a sentence.