Notes On Modals - Introduction and Usage - CBSE Class 9 English Grammar
Modal verbs are special verbs which behave very differently from normal verbs. Here are some important differences:

1. Modal verbs do not take "-s" in the third person.

Examples:
Julie can speak French.
The team should be here by 6 am tomorrow.

2. You use "not" to make modal verbs negative, even in Simple Present and Simple Past.

Examples:
We should not eat junk food.
She might not come to college.

3. Many modal verbs cannot be used in the past tenses or the future tenses.

Examples:
She will can run fast. Not Correct
Naresh musted study very hard. Not Correct

Common Modal Verbs

Can
Could
May
Might
Must/Ought to
Shall
Should
Will
Would

Summary

Modal verbs are special verbs which behave very differently from normal verbs. Here are some important differences:

1. Modal verbs do not take "-s" in the third person.

Examples:
Julie can speak French.
The team should be here by 6 am tomorrow.

2. You use "not" to make modal verbs negative, even in Simple Present and Simple Past.

Examples:
We should not eat junk food.
She might not come to college.

3. Many modal verbs cannot be used in the past tenses or the future tenses.

Examples:
She will can run fast. Not Correct
Naresh musted study very hard. Not Correct

Common Modal Verbs

Can
Could
May
Might
Must/Ought to
Shall
Should
Will
Would
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