Modal verb «COULD»

Каждый модальных глаголов – can/could/may/might/must – обладает своей степенью предположения и уверенности по сравнению с остальными.

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How is the verb tense modal verb «could» used?

The English verb «could» is used as both an auxiliary verb and a modal verb? Could is almost always used with a main verb tenses.

• Could is used as the past tense of «can».
• Could is used to is used to request something in the present tense.
• Usually when could is used in the present tense, it is used to ask a question.

Examples:

• Could the girls come with me to the store?
• I could not go to the moves last night, I had to study.
• We couldn’t help you clean the house.

Structure of «could»:

• When using as a modal 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 doesn’t change form according to the subject.)

* 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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