English verb conjugation
CAN ACHIEVE

Regular verb: achieve - achieved - achieved

Affirmation

Simple form	V-ing form
I can achieve you can achieve he can achieve we can achieve you can achieve they can achieve	I can be achieving you can be achieving he can be achieving we can be achieving you can be achieving they can be achieving
Perfect	V-ing perfect
I can have achieved you can have achieved he can have achieved we can have achieved you can have achieved they can have achieved	I can have been achieving you can have been achieving he can have been achieving we can have been achieving you can have been achieving they can have been achieving

Negation

Simple form	V-ing form
I can't achieve you can't achieve he can't achieve we can't achieve you can't achieve they can't achieve	I can't be achieving you can't be achieving he can't be achieving we can't be achieving you can't be achieving they can't be achieving
Perfect	V-ing perfect
I can't have achieved you can't have achieved he can't have achieved we can't have achieved you can't have achieved they can't have achieved	I can't have been achieving you can't have been achieving he can't have been achieving we can't have been achieving you can't have been achieving they can't have been achieving

Interrogative form

Simple form	V-ing form
can I achieve? can you achieve? can he achieve? can we achieve? can you achieve? can they achieve?	can I be achieving? can you be achieving? can he be achieving? can we be achieving? can you be achieving? can they be achieving?
Perfect	V-ing perfect
can I have achieved? can you have achieved? can he have achieved? can we have achieved? can you have achieved? can they have achieved?	can I have been achieving? can you have been achieving? can he have been achieving? can we have been achieving? can you have been achieving? can they have been achieving?

Interro-negative form

Simple form	V-ing form
can't I achieve? can't you achieve? can't he achieve? can't we achieve? can't you achieve? can't they achieve?	can't I be achieving? can't you be achieving? can't he be achieving? can't we be achieving? can't you be achieving? can't they be achieving?
Perfect	V-ing perfect
can't I have achieved? can't you have achieved? can't he have achieved? can't we have achieved? can't you have achieved? can't they have achieved?	can't I have been achieving? can't you have been achieving? can't he have been achieving? can't we have been achieving? can't you have been achieving? can't they have been achieving?