What is the difference between "You can join us if you want" and "You could have come with us yesterday"?

Aug 20, 2022 ... There is no difference in meaning between “can you please” and “could you please”. Actually, sentences that begin with 'could', 'should', or ' ... Oct 26, 2023 ... In some cases, 'could' functions as the past tense of 'can', but there are some important usage differences between the two. The modal verb 'can ... 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 ... 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 ... “Could” vs. “Can” · Can is used when referring to something with a strong possibility or occurring, whereas could is used to refer to something that has a weak ... 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 ... Mar 12, 2010 ... “Can you” is the most casual, “could you” is more polite and “would you” is the most formal and polite. Feb 13, 2013 ... "Can" is a rude way to ask, it's like giving a command. "Could" is a polite way to ask, it's like a requesting. CAN/COULD are modal auxiliary verbs. We use CAN to: a) talk about possibility and ability b) make requests c) ask for or give permission. We use COULD to: ... Apr 18, 2020 ... A significant difference in the pressure recorded in the right and left arms can signal circulatory problems that may lead to stroke, peripheral artery disease,