Helping verbs - Can

Can and could are often mixed up. "Can" is usually used to show ability, possibility, willingness, or to ask for permission. "Could" is the past tense of "can," and it also expresses a conditional tone or possibility. This worksheet provides practice with using "can" in different contexts. Worksheet instructions: Next to each sentence, write whether the word “can” expresses permission, ability, possibility, or willingness.