  |
 |
  |
Introduction to Exercise 5 - Using the base form after modals (could, must) and do |
| |
 |
|
| • |
Use the base forms of verbs after do, does,
and did.
- Example: Marisol didn't come to school yesterday.
|
| • |
Use the base forms of verbs after modals such as
must, should, can, and might.
- Example: Pedro should study hard this semester.
|
| • |
Use the past participle forms of verbs if the modals are followed by HAVE or BE.
- Examples: The application forms must be filled out in ink.
I think they should have told us about the change of schedules.
|
 Download Grammar Explanation (PDF) |
|
|
| |
 |
|
The following passages contain mistakes in the use of verbs after modals and auxiliaries.
If you click on the word or phrase that contains the mistake, two choices will appear on the
side. Click on the correct choice to insert it in the passage. If you click on the wrong choice,
the Answer box at the bottom of the choices will tell you to try again.
|
|
|
