How is 'could' used with auxiliary verbs (e.g., have, be)?

“Can” is probably a little more natural since they're your friend. If you are, however, at like someone's office, you're visiting a colleague you might instead ... Sep 3, 2021 ... “It can be hard to tell the difference between food poisoning and a stomach virus,” she admits. “If you've just been to an event where food ... "Can" is generally used for present abilities or possibilities, while "could" is used for past abilities, polite requests, or hypothetical situations. Feb 22, 2022 ... We show that a bounded drift diffusion model (DDM) can explain both effects with variable parameters: trial-to-trial variability in the starting ... Jan 17, 2020 ... An EpiPen could be used to stop the allergic reaction. Dietitians can help patients remove the problematic gluten from their diet. Dec 10, 2016 ... Could not actually understand difference between Object, Embed, and Param tag. Can anybody explain it explicitly? I checked w3schools as ... May 6, 2024 ... Both are modal auxiliary verbs, indicating possibility, capability, permission, or ability, but they operate in different temporal contexts. Nov 10, 2022 ... We use the verbs can and could to ask for permission to do something. Could is more formal and more polite than can. Think about the different ... Could anyone share what the difference is between Inference question type and MBT question type on 7sage? And can anyone share in regards to whether doing ... 'Can' is used to represent present condition of the subject, but could is used to reflect a past ability, as could is nothing but a past form of can.