Modals in Past Form
Modals are helping words that are used to express: (1)possibility, (2)ability, (3)degree of certainty, and (4) level of authority
Formula of modals is:
- To express an ability in the past:
- To express past or future permission:
- To express present possibility:
Kinds of modals such as:
Can, could, may,might, must, ought to, shall, should, will, and would.
are used in the past time.They are could, would, should, and might.
Formula of modals is:
Modals + verb 1 + O/C. Can be used in every tenses.
a. Could is the past tense of can
The modal auxiliary could is used
I could always beat you at tennis when we were kids.
Could i bury my cat in your back yard?
We could always spend the afternoon just sitting around talking
- To express possibility or ability in contingent circumstances :
If he studied harder, he could pass this course.