Vanessa focuses on three modal verbs that English learners often find difficult: “could,” “would,” and “should.” She explains each form and then uses clips from a conversation with her sister to show how the words work naturally. A modal verb can communicate possibility, an imagined situation, or advice, and the surrounding sentence helps determine the meaning.
“Could” can express a possible future event, as in “It could rain today.” “Would” appears in hypothetical situations, such as “If I were president, I would change the education system.” This sentence describes an imagined condition and its possible result, not a real claim that the speaker is president. “Should” is presented mainly as polite advice. A speaker might say “You should do something” to recommend an action, or “You shouldn’t worry” to reassure someone.
The examples demonstrate that modals are not interchangeable. “Could” can sound less certain than a direct prediction, “would” often needs an imagined or conditional context, and “should” offers guidance without making the same strong demand as “must.” Adding “probably” can soften advice further, as in “You should probably clean your office.” Tone and relationship still matter, so advice may sound helpful in one situation and intrusive in another.
For practice, choose a familiar problem and make one sentence with each modal. For example, describe what could happen, what you would do in an imagined situation, and what someone should consider doing. Keep the verb after the modal in its base form. Then read the sentences aloud and notice how the modal changes the speaker’s attitude. The aim is to express possibility, imagination, or advice precisely, not to memorize a one-word translation for each verb. Short examples drawn from real situations can make the distinctions easier to recall. You can also turn advice into a question when you want to sound less direct. Compare “You should call” with “Could you call?” and notice how the speaker’s purpose changes.