Front

What is the modal verb used to express ability in the past?

Back

Could

Front

What is the past perfect continuous tense used to indicate?

Back

An action that was ongoing in the past before another action occurred.

Front

What modal verb indicates a strong assumption about a past action?

Back

Must have

Front

What is the correct form of the verb to use when making a polite suggestion about a future action?

Back

Would (e.g., Would you rather I called tomorrow?)

Front

What does 'don't have to' imply about an obligation?

Back

It indicates that there is no necessity to perform the action.

Front

What is the difference between 'should' and 'ought to'?

Back

Both suggest advice, but 'should' is more commonly used in modern English.

Front

What is the function of modal verbs in English?

Back

To express ability, possibility, permission, or obligation.

Front

What is the structure of a past perfect continuous sentence?

Back

Subject + had been + verb-ing.

Front

How do you form a question using 'would' for a hypothetical situation?

Back

Use 'Would + subject + base form of the verb?' (e.g., Would you go if you could?)

Front

What does 'might' express in terms of possibility?

Back

A weaker possibility compared to 'may'.