English verb conjugation
CAN ENTER STH

Regular verb: enter sth - enter sthed - enter sthed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I can enter sth you can enter sth he can enter sth we can enter sth you can enter sth they can enter sth	I can be enter sthing you can be enter sthing he can be enter sthing we can be enter sthing you can be enter sthing they can be enter sthing
Perfect	V-ing perfect
I can have enter sthed you can have enter sthed he can have enter sthed we can have enter sthed you can have enter sthed they can have enter sthed	I can have been enter sthing you can have been enter sthing he can have been enter sthing we can have been enter sthing you can have been enter sthing they can have been enter sthing

Negation

Simple form	V-ing form
I cannot enter sth you cannot enter sth he cannot enter sth we cannot enter sth you cannot enter sth they cannot enter sth	I cannot be enter sthing you cannot be enter sthing he cannot be enter sthing we cannot be enter sthing you cannot be enter sthing they cannot be enter sthing
Perfect	V-ing perfect
I cannot have enter sthed you cannot have enter sthed he cannot have enter sthed we cannot have enter sthed you cannot have enter sthed they cannot have enter sthed	I cannot have been enter sthing you cannot have been enter sthing he cannot have been enter sthing we cannot have been enter sthing you cannot have been enter sthing they cannot have been enter sthing

Interrogative form

Simple form	V-ing form
can I enter sth? can you enter sth? can he enter sth? can we enter sth? can you enter sth? can they enter sth?	can I be enter sthing? can you be enter sthing? can he be enter sthing? can we be enter sthing? can you be enter sthing? can they be enter sthing?
Perfect	V-ing perfect
can I have enter sthed? can you have enter sthed? can he have enter sthed? can we have enter sthed? can you have enter sthed? can they have enter sthed?	can I have been enter sthing? can you have been enter sthing? can he have been enter sthing? can we have been enter sthing? can you have been enter sthing? can they have been enter sthing?

Interro-negative form

Simple form	V-ing form
can I not enter sth? can you not enter sth? can he not enter sth? can we not enter sth? can you not enter sth? can they not enter sth?	can I not be enter sthing? can you not be enter sthing? can he not be enter sthing? can we not be enter sthing? can you not be enter sthing? can they not be enter sthing?
Perfect	V-ing perfect
can I not have enter sthed? can you not have enter sthed? can he not have enter sthed? can we not have enter sthed? can you not have enter sthed? can they not have enter sthed?	can I not have been enter sthing? can you not have been enter sthing? can he not have been enter sthing? can we not have been enter sthing? can you not have been enter sthing? can they not have been enter sthing?