Writing with Tenses / Modal Verbs
Can and could: ability and permission
Can expresses present ability or permission. Could can describe general past ability or a polite request. Use a base verb after either modal.
Understand and use it
Can expresses present ability or permission. Could can describe general past ability or a polite request. Use a base verb after either modal.
Examples and a writing plan
I can swim.
Could you open the window?
When I was six, I could ride a bicycle.
Common mistake to investigate
She can swims.
After can/could use V1; do not add -s.
Use the rule now
Describe three things you can do and politely ask permission for an activity.
Use this rule: write and correct
Try first. Hints become more specific after each attempt. Your attempts and corrections are saved with your existing writing progress.
From this rule to your writing
TRY IT YOURSELF
A quick check
A wrong answer is a chance to learn. Use the hint and try again.