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English Grammar
The Verb "Could"
Could is used as both an auxiliary verb and a modal verb.
Could is almost always used with a main verb.
- I could not call you last week.
- We could not drive the car yesterday.
- They could not take the exam last week.
Could is used as the past tense of "can".
- I could help you learn English.
- We could come over next week.
- My friends could fix your car.
Could is used to request something in the present tense.
- Could you give me some money?
- Could you help me with my car?
- Could you come and pick us up?
Structure of "could":
- When using as a model verb or an auxiliary verb the verb "could" stays in its base form.
- Could does not change form according to the subject.
- Could is followed by a main verb. The main verb also stays in its base form. The main verb that is used with could does not change form according to the subject.
- | Subject | "Could" | - | Main Verb | - |
---|---|---|---|---|---|
Positive Sentences | I | could | - | go | to the store. |
Negative Sentences | We | could | not | go | to the store. |
Questions** | Could | they | - | go | to the store. |
* All subjects are: I, we, they, you, plural nouns, singular nouns and uncountable nouns.
**Questions - When could is used to ask a question, could comes before the subject.
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