English verb conjugation
OUGHT TO WHISTLE

Regular verb: whistle - whistled - whistled

Affirmation

Simple form	V-ing form
I ought to whistle you ought to whistle he ought to whistle we ought to whistle you ought to whistle they ought to whistle	I ought to be whistling you ought to be whistling he ought to be whistling we ought to be whistling you ought to be whistling they ought to be whistling
Perfect	V-ing perfect
I ought to have whistled you ought to have whistled he ought to have whistled we ought to have whistled you ought to have whistled they ought to have whistled	I ought to have been whistling you ought to have been whistling he ought to have been whistling we ought to have been whistling you ought to have been whistling they ought to have been whistling

Negation

Simple form	V-ing form
I oughtn't to whistle you oughtn't to whistle he oughtn't to whistle we oughtn't to whistle you oughtn't to whistle they oughtn't to whistle	I oughtn't to be whistling you oughtn't to be whistling he oughtn't to be whistling we oughtn't to be whistling you oughtn't to be whistling they oughtn't to be whistling
Perfect	V-ing perfect
I oughtn't to have whistled you oughtn't to have whistled he oughtn't to have whistled we oughtn't to have whistled you oughtn't to have whistled they oughtn't to have whistled	I oughtn't to have been whistling you oughtn't to have been whistling he oughtn't to have been whistling we oughtn't to have been whistling you oughtn't to have been whistling they oughtn't to have been whistling

Interrogative form

Simple form	V-ing form
ought to I whistle? ought to you whistle? ought to he whistle? ought to we whistle? ought to you whistle? ought to they whistle?	ought to I be whistling? ought to you be whistling? ought to he be whistling? ought to we be whistling? ought to you be whistling? ought to they be whistling?
Perfect	V-ing perfect
ought to I have whistled? ought to you have whistled? ought to he have whistled? ought to we have whistled? ought to you have whistled? ought to they have whistled?	ought to I have been whistling? ought to you have been whistling? ought to he have been whistling? ought to we have been whistling? ought to you have been whistling? ought to they have been whistling?

Interro-negative form

Simple form	V-ing form
oughtn't I to whistle? oughtn't you to whistle? oughtn't he to whistle? oughtn't we to whistle? oughtn't you to whistle? oughtn't they to whistle?	oughtn't I to be whistling? oughtn't you to be whistling? oughtn't he to be whistling? oughtn't we to be whistling? oughtn't you to be whistling? oughtn't they to be whistling?
Perfect	V-ing perfect
oughtn't I to have whistled? oughtn't you to have whistled? oughtn't he to have whistled? oughtn't we to have whistled? oughtn't you to have whistled? oughtn't they to have whistled?	oughtn't I to have been whistling? oughtn't you to have been whistling? oughtn't he to have been whistling? oughtn't we to have been whistling? oughtn't you to have been whistling? oughtn't they to have been whistling?