I can boast you can boast he can boast we can boast you can boast they can boast
Forma con V-ing
I can be boasting you can be boasting he can be boasting we can be boasting you can be boasting they can be boasting
Perfecto
I can have boasted you can have boasted he can have boasted we can have boasted you can have boasted they can have boasted
Perfecto con V-ing
I can have been boasting you can have been boasting he can have been boasting we can have been boasting you can have been boasting they can have been boasting
Negación
Forma simple
I can't boast you can't boast he can't boast we can't boast you can't boast they can't boast
Forma con V-ing
I can't be boasting you can't be boasting he can't be boasting we can't be boasting you can't be boasting they can't be boasting
Perfecto
I can't have boasted you can't have boasted he can't have boasted we can't have boasted you can't have boasted they can't have boasted
Perfecto con V-ing
I can't have been boasting you can't have been boasting he can't have been boasting we can't have been boasting you can't have been boasting they can't have been boasting
Forma interrogativa
Forma simple
can I boast? can you boast? can he boast? can we boast? can you boast? can they boast?
Forma con V-ing
can I be boasting? can you be boasting? can he be boasting? can we be boasting? can you be boasting? can they be boasting?
Perfecto
can I have boasted? can you have boasted? can he have boasted? can we have boasted? can you have boasted? can they have boasted?
Perfecto con V-ing
can I have been boasting? can you have been boasting? can he have been boasting? can we have been boasting? can you have been boasting? can they have been boasting?
Forma interro-negativa
Forma simple
can't I boast? can't you boast? can't he boast? can't we boast? can't you boast? can't they boast?
Forma con V-ing
can't I be boasting? can't you be boasting? can't he be boasting? can't we be boasting? can't you be boasting? can't they be boasting?
Perfecto
can't I have boasted? can't you have boasted? can't he have boasted? can't we have boasted? can't you have boasted? can't they have boasted?
Perfecto con V-ing
can't I have been boasting? can't you have been boasting? can't he have been boasting? can't we have been boasting? can't you have been boasting? can't they have been boasting?