Modals
From the same topic
Say what is possible, what someone is able to do, and what you want to ask for politely.
Use can for ability, possibility, or informal permission. The form stays the same with every person and is followed by the base verb without to. The negative is can't or cannot.
Updated: July 2026
A1 · Modals · 9 min
A structured ten-slide lesson for A1 learners. Hear the modal in context, learn its fixed sentence pattern, and practise abilities, requests, permission, and negatives. The whole arc takes about nine minutes and requires no signup.
The modal can lets you express three closely related ideas. First, it describes ability: *“She can speak three languages.”* The sentence tells us that the person has that skill. Second, can can name a possibility: *“This room can get noisy.”* The room has not learned an ability; the sentence tells us what is possible under certain conditions. Third, can handles informal permission and requests. With *“Can I leave early?”* you ask whether an action is permitted. With *“Can you send me the report?”* you ask another person to act. The exact meaning comes from context, not from a different grammatical form. That makes can highly useful at beginner level: one small word lets you talk about personal skills, practical conditions, and simple social situations. At work, for example, you can explain who speaks which languages, whether a meeting time is possible, or whether a colleague can send a report. Across all three uses, the shared idea is that an action is possible, manageable, or permitted.
The form of can is unusually simple. It stays identical with every subject: *“I can,” “you can,” “he can,” “she can,” “we can,”* and *“they can.”* There is therefore no third-person singular -s. A sentence such as *“He cans use the software”* transfers an ending from ordinary present-tense verbs onto a modal and is incorrect. The correct form is *“He can use the software.”* The main verb directly after can also stays in its base form and carries no person ending: *“She can speak,”* not *“She can speaks.”* Learn the construction as one stable building block: subject + can + base verb. When you replace the subject, the rest of the pattern does not move. *“I can help”* becomes *“Marta can help”* without any change to can or help. At beginner level, repeating whole short groups aloud is useful: *“I can work,” “she can work,” “they can work.”* The repeated sound helps you notice that English asks for no extra ending anywhere in this modal pattern.
After can, the main verb appears as the bare base form, with no to. English says *“I can swim,” “She can read,”* and *“We can send the report.”* Forms such as *“can to swim”* and *“can to send”* do not belong to this pattern. This point matters especially for learners whose first language encourages an infinitive marker in a similar construction. German infinitives are often mentally connected with zu, and a word-for-word transfer can place an unnecessary to in the English sentence. Treat can + base verb as one complete building block. The modal already carries the grammatical function; the next verb simply names the action. Longer complements do not change the structure. In *“She can speak three languages,”* speak follows the modal directly, while three languages adds information about the ability. In *“Can you send me the report?”* send remains a base verb even though the sentence is a question. When you check your writing, inspect the two neighbouring positions: if the first contains can or can't, the next must contain a base verb.
In questions, can moves before the subject. The statement *“You can send the report”* becomes *“Can you send the report?”* No additional do is needed. The order is Can + subject + base verb? Two particularly useful openings differ by person. *“Can you…?”* makes a request to another person: *“Can you send me the report?”* You are asking whether the listener can perform the action. *“Can I…?”* asks for informal permission for your own action: *“Can I leave early?”* In both patterns, the verb after the subject remains in its base form. Learners sometimes mix the modal question with the ordinary do-question pattern, producing *“Do you can send…?”* Others add an unnecessary ending in *“Can you sends…?”* Keep the modal construction separate and repeat it as a whole chunk. The business value is immediate: the same compact pattern lets you ask a colleague for a file, request help with a task, or ask permission to change a schedule. The grammar stays short because can itself creates the question.
The negative is can't, or cannot in its uncontracted form. The main verb still follows in the base form: *“I can't come on Friday”* and *“She cannot read this menu.”* You need neither a form of do nor an additional ending. Depending on context, can't can express a missing ability, an impossible situation, or missing permission. In *“She can't read this menu,”* the person lacks the necessary ability. In *“I can't come on Friday,”* the context tells us that Friday is not possible for the speaker. The situation reveals what kind of limit is meant. The stable pattern remains subject + can't + base verb. Learner forms such as *“He doesn't can come”* and *“She cans not read”* appear when the modal is treated like an ordinary present-tense verb. Use the modal's own negative form instead. In a message to colleagues, this compact construction lets you state a limit and then offer an alternative: *“I can't come on Friday, but I can join on Monday.”* The two halves use the same base-verb structure.
When listening, the negative must be clear enough because can and can't may be separated by small sound signals. In British English, can't is commonly /kɑːnt/, which contrasts clearly with can. In American English, can't is often /kænt/, and the /t/ may be the clearest sign that the word is negative. Listen not only to the vowel but also to the end of the word and to the meaning of the complete sentence. Practise short contrast pairs: *“I can come”* versus *“I can't come,”* and *“She can read it”* versus *“She can't read it.”* When speaking, make the /t/ in the negative deliberately audible at first. Then transfer the pattern into a real situation. State an ability, name a limit, and make a request: *“I can prepare the figures. I can't join on Friday. Can you send the report?”* That short sequence combines every central building block in the lesson. As a next step, *must-have-to-should* (B1) develops other modal meanings such as obligation and advice.
It can express both, and context decides. *“She can speak Spanish”* describes ability, while *“Can I leave early?”* asks for informal permission. Can can also express possibility, as in *“This room can get noisy.”*
The modal stays unchanged with every person, so the form is *“he can”* with no -s. It is followed by the base verb without to: *“He can swim.”* Learn can + base verb as one fixed unit.
Yes. *“She can't read the menu”* can describe a missing ability, while *“I can't come on Friday”* describes a situation that is not possible. In another context, the same form can express missing permission. The structure stays subject + can't + base verb.
No. British English uses /kɑːnt/, while American English often uses /kænt/. In American English, the /t/ may be the only clear signal separating the negative from can, so listen closely to the end of the word.
Use *subject-pronouns* (A1) to review the subjects that take the unchanged modal form. *basic-question-forms* (A1) expands your knowledge of English questions. Next, *must-have-to-should* (B1) adds modal meanings for obligation and advice.
Can belongs to the same word family as know and the German words kennen and können. It originally meant “to know how to.” Its modern ability meaning preserves that basic idea.
From the same topic
New every week
Ready to practise with a human? Simmonds tutors teach live on Zoom or in person in Berlin and Hannover.
Book a live lesson