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English Grammar
The Verb Structure "Could" Chart
What is structure of the verb "could"?
- When using as a modal verb or an auxiliary verb tense 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 tense also stays in its base form. The main verb tense doesn't change form according to the subject.
- Could is followed by a main verb. The main verb tense also stays in its base form. The main verb tense doesn't change form according to the subject.
| - | Subject | Could | - | Main The 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. |
**Questions - When could is used to ask a question "could" comes before the subject.