may deteriorate
Verbo regular: deteriorate - deteriorated- deteriorated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may deteriorate
you may deteriorate
he may deteriorate
we may deteriorate
you may deteriorate
they may deteriorate 	I may be deteriorating
you may be deteriorating
he may be deteriorating
we may be deteriorating
you may be deteriorating
they may be deteriorating	I may have deteriorated
you may have deteriorated
he may have deteriorated
we may have deteriorated
you may have deteriorated
they may have deteriorated	I may have been deteriorating
you may have been deteriorating
he may have been deteriorating
we may have been deteriorating
you may have been deteriorating
they may have been deteriorating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't deteriorate
you mayn't deteriorate
he mayn't deteriorate
we mayn't deteriorate
you mayn't deteriorate
they mayn't deteriorate 	I mayn't be deteriorating
you mayn't be deteriorating
he mayn't be deteriorating
we mayn't be deteriorating
you mayn't be deteriorating
they mayn't be deteriorating	I mayn't have deteriorated
you mayn't have deteriorated
he mayn't have deteriorated
we mayn't have deteriorated
you mayn't have deteriorated
they mayn't have deteriorated	I mayn't have been deteriorating
you mayn't have been deteriorating
he mayn't have been deteriorating
we mayn't have been deteriorating
you mayn't have been deteriorating
they mayn't have been deteriorating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I deteriorate?
may you deteriorate?
may he deteriorate?
may we deteriorate?
may you deteriorate?
may they deteriorate? 	may I be deteriorating?
may you be deteriorating?
may he be deteriorating?
may we be deteriorating?
may you be deteriorating?
may they be deteriorating? 	may I have deteriorated?
may you have deteriorated?
may he have deteriorated?
may we have deteriorated?
may you have deteriorated?
may they have deteriorated? 	may I have been deteriorating?
may you have been deteriorating?
may he have been deteriorating?
may we have been deteriorating?
may you have been deteriorating?
may they have been deteriorating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I deteriorate?
mayn't you deteriorate?
mayn't he deteriorate?
mayn't we deteriorate?
mayn't you deteriorate?
mayn't they deteriorate? 	mayn't I be deteriorating?
mayn't you be deteriorating?
mayn't he be deteriorating?
mayn't we be deteriorating?
mayn't you be deteriorating?
mayn't they be deteriorating? 	mayn't I have deteriorated?
mayn't you have deteriorated?
mayn't he have deteriorated?
mayn't we have deteriorated?
mayn't you have deteriorated?
mayn't they have deteriorated? 	mayn't I have been deteriorating?
mayn't you have been deteriorating?
mayn't he have been deteriorating?
mayn't we have been deteriorating?
mayn't you have been deteriorating?
mayn't they have been deteriorating?