I ought to compare you ought to compare she ought to compare we ought to compare you ought to compare they ought to compare
V-ing form
I ought to be comparing you ought to be comparing she ought to be comparing we ought to be comparing you ought to be comparing they ought to be comparing
Perfect
I ought to have compared you ought to have compared she ought to have compared we ought to have compared you ought to have compared they ought to have compared
V-ing perfect
I ought to have been comparing you ought to have been comparing she ought to have been comparing we ought to have been comparing you ought to have been comparing they ought to have been comparing
Negation
Simple form
I oughtn't to compare you oughtn't to compare she oughtn't to compare we oughtn't to compare you oughtn't to compare they oughtn't to compare
V-ing form
I oughtn't to be comparing you oughtn't to be comparing she oughtn't to be comparing we oughtn't to be comparing you oughtn't to be comparing they oughtn't to be comparing
Perfect
I oughtn't to have compared you oughtn't to have compared she oughtn't to have compared we oughtn't to have compared you oughtn't to have compared they oughtn't to have compared
V-ing perfect
I oughtn't to have been comparing you oughtn't to have been comparing she oughtn't to have been comparing we oughtn't to have been comparing you oughtn't to have been comparing they oughtn't to have been comparing
Interrogative form
Simple form
ought to I compare? ought to you compare? ought to she compare? ought to we compare? ought to you compare? ought to they compare?
V-ing form
ought to I be comparing? ought to you be comparing? ought to she be comparing? ought to we be comparing? ought to you be comparing? ought to they be comparing?
Perfect
ought to I have compared? ought to you have compared? ought to she have compared? ought to we have compared? ought to you have compared? ought to they have compared?
V-ing perfect
ought to I have been comparing? ought to you have been comparing? ought to she have been comparing? ought to we have been comparing? ought to you have been comparing? ought to they have been comparing?
Interro-negative form
Simple form
oughtn't I to compare? oughtn't you to compare? oughtn't she to compare? oughtn't we to compare? oughtn't you to compare? oughtn't they to compare?
V-ing form
oughtn't I to be comparing? oughtn't you to be comparing? oughtn't she to be comparing? oughtn't we to be comparing? oughtn't you to be comparing? oughtn't they to be comparing?
Perfect
oughtn't I to have compared? oughtn't you to have compared? oughtn't she to have compared? oughtn't we to have compared? oughtn't you to have compared? oughtn't they to have compared?
V-ing perfect
oughtn't I to have been comparing? oughtn't you to have been comparing? oughtn't she to have been comparing? oughtn't we to have been comparing? oughtn't you to have been comparing? oughtn't they to have been comparing?