1.- NO -S after he/she or it: She can speak English
2.-NO - DO/DOES IN QUESTIONS OR NEGATIVE FORMS.
CAN SHE SPEAK ENGLISH? V
NO: does she can speak English? X
3.- They can't be used without a main verb,
2.-NO - DO/DOES IN QUESTIONS OR NEGATIVE FORMS.
CAN SHE SPEAK ENGLISH? V
NO: does she can speak English? X
3.- They can't be used without a main verb,
4.- They can't form gerunds or participles,
5.- They do not have any endings to show person, number, or tense.
6.- Modal verbs form questions without the help of the other auxiliary verbs
7.-All modal verbs take the infinitive without the particle "to".
8.-when speaking about the main meaning of the verb CAN, some linguists use the words "ability, possibility", others speak about "physical and mental ability", still others say "ability, power, skill, opportunity".
CAN: ABILITY- POSSIBILITY- PERMISSIION- PROHIBITION- NEGATIVE CERTAINTY-
CLICK ON THE FOLLOWING LINK AND DO THE MODAL CAN EXERCISE
