Page 25 - pet225ebook

1. There is no “s” in singular

He can ski. (right)

He cans ski or He can skis. (wrong)

2. There is no “do / does” in the question.

Would you like to come with me? (right)

Do you would like to come with me? (wrong)

3. There is no “don’t / doesn’t” in the negative.

They can’t be serious. (right)

They don’t can be serious. (wrong)

4. Modal verbs do not have infinitives or –ing forms

Must (right)
to must /musting (wrong)

shall (right)
to shall/ shalling (wrong)

5. Modal verbs are followed by an infinitive without to-

She must cook (strong obligation)
We should have taken the opportunity (recommendation)

He could play badminton for hours (ability in the past)

6. Modal verbs do not have all the tenses!

7. Modal verbs use other verbs to complete the tenses.

Can is completed with be able to

Must is completed with have to