Speaking: Grammar in Speaking A2 - Lesson 5: Using "can/can't" for Ability

Welcome! Expressing your practical skills clearly is a key competency when explaining your talents or interacting in international environments.

Mastering the modal verbs can and can't allows you to accurately convey your personal competencies and limitations. This lesson breaks down affirmative statements, negative structures, question forms, and structural adverbs like 'very well' or 'at all'.

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Welcome to your spoken development layout! I am Teacher Sopheak. When students want to talk about their technical skills, hobbies, or job qualifications, using the modal verbs for ability accurately is critical.

Today, we are focusing on how to formulate structural statements with can and can't smoothly, ensuring your rhythm matches native speech parameters.

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1. Affirmative Structures

To declare a skill or functional capability, use can combined directly with the base form of your action verb. In fluid spoken English, notice that the word "can" undergoes a pronunciation shift; it becomes shortened and neutral, sounding like /kən/ ("kun").

I can swim. /aɪ kən swɪm/

Definition: I know how to swim. (100% capable)

She can speak English. /ʃi kən spiːk ˈɪŋɡlɪʃ/

Definition: She has the ability to speak English.

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2. Negative Configurations

When stating an inability or lack of skill, use the contraction can't or the formal complete variant cannot. In oral interactions, it is crucial to emphasize the negative modal strongly (/kænt/) so your listener clearly catches the restriction.

I can't fly. /aɪ kænt flaɪ/

Definition: I do not have the physical ability to fly.

He cannot cook. /hi ˈkænɒt kʊk/

Definition: He does not know how to cook. (Formal structure)

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3. Spoken Inquiries and Question Layouts

To request information about someone's competencies, invert the structural layout by moving the modal verb to the front position: Can + Subject + Base Verb? Respond efficiently using quick short-answer clusters.

Can you drive? /kən ju draɪv/

Definition: Do you know how to drive a vehicle?

Yes, I can. No, I can't.

What can he do? /wʌt kən hi doʊ/

Definition: What are his specific skills or abilities?

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4. Measuring Degrees of Ability

To avoid sounding binary (just yes or no), modify your proficiency scale by appending adverbs at the end of your clause. This indicates exactly how skilled you are at a particular task.

I can sing very well.

Definition: 100% Mastery. I am excellent at singing.

I can sing quite well.

Definition: 75% Competency. I am good at singing, but not perfect.

I can sing a little.

Definition: 25% Threshold. I have basic singing skills.

I can't sing at all.

Definition: 0% Total Limitation. I completely lack the ability to sing.

warning The Infinitive & Third-Person S Trap

Modal structures act as absolute verbs. They strictly resist structural assistance.

• Never place the infinitive marker "to" after the modal verb.
• Never attach an "s" termination to the action verb when using third-person singular subjects (He / She / It).

I can to swim.
He can swims. close Incorrect Assembly

I can swim.
He can swim. check Proper Direct Base Form

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Acoustic Verification Module

music_note Instrumental Competency

Select the correct spoken framework: "She ___ play the guitar."

(Hint: Never use 'to' after a modal verb.)

directions_run Third-Person Constraints

Identify the clean base form output: "He can ___ fast."

(Hint: Do not add an 's' to the main verb after 'can'.)

language Inquiry Integration

"________ they speak French fluently?"

(Hint: Use the modal verb for ability.)

groups Evaluating Limitation

To express 0% structural capability in dance: "I can't dance ________."

(Hint: Which phrase means 0% ability?)

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Phonetic Evaluation Complete

0%

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Study Resources

Lesson Summary & Review

Let's review the key concepts covered in the interactive module above to ensure you are ready to speak about your abilities.

Core Structural Forms

• Affirmative (+): Subject + can + Base Verb (e.g., I can swim.)
• Negative (-): Subject + can't / cannot + Base Verb (e.g., I can't fly.)
• Question (?): Can + Subject + Base Verb? (e.g., Can you drive?)

Important Grammar Rules

Modal verbs like "can" are special. They do not behave like normal verbs:

• Never use "to" after can. (Say "I can swim," not "I can to swim.")
• Never add an "s" to the verb, even for he/she/it. (Say "He can swim," not "He can swims.")