English verb conjugation
MUST PHOTOSYNTHESISE

Regular verb: photosynthesise - photosynthesised - photosynthesised

Affirmation

Simple form	V-ing form
I must photosynthesise you must photosynthesise he must photosynthesise we must photosynthesise you must photosynthesise they must photosynthesise	I must be photosynthesising you must be photosynthesising he must be photosynthesising we must be photosynthesising you must be photosynthesising they must be photosynthesising
Perfect	V-ing perfect
I must have photosynthesised you must have photosynthesised he must have photosynthesised we must have photosynthesised you must have photosynthesised they must have photosynthesised	I must have been photosynthesising you must have been photosynthesising he must have been photosynthesising we must have been photosynthesising you must have been photosynthesising they must have been photosynthesising

Negation

Simple form	V-ing form
I mustn't photosynthesise you mustn't photosynthesise he mustn't photosynthesise we mustn't photosynthesise you mustn't photosynthesise they mustn't photosynthesise	I mustn't be photosynthesising you mustn't be photosynthesising he mustn't be photosynthesising we mustn't be photosynthesising you mustn't be photosynthesising they mustn't be photosynthesising
Perfect	V-ing perfect
I mustn't have photosynthesised you mustn't have photosynthesised he mustn't have photosynthesised we mustn't have photosynthesised you mustn't have photosynthesised they mustn't have photosynthesised	I mustn't have been photosynthesising you mustn't have been photosynthesising he mustn't have been photosynthesising we mustn't have been photosynthesising you mustn't have been photosynthesising they mustn't have been photosynthesising

Interrogative form

Simple form	V-ing form
must I photosynthesise? must you photosynthesise? must he photosynthesise? must we photosynthesise? must you photosynthesise? must they photosynthesise?	must I be photosynthesising? must you be photosynthesising? must he be photosynthesising? must we be photosynthesising? must you be photosynthesising? must they be photosynthesising?
Perfect	V-ing perfect
must I have photosynthesised? must you have photosynthesised? must he have photosynthesised? must we have photosynthesised? must you have photosynthesised? must they have photosynthesised?	must I have been photosynthesising? must you have been photosynthesising? must he have been photosynthesising? must we have been photosynthesising? must you have been photosynthesising? must they have been photosynthesising?

Interro-negative form

Simple form	V-ing form
mustn't I photosynthesise? mustn't you photosynthesise? mustn't he photosynthesise? mustn't we photosynthesise? mustn't you photosynthesise? mustn't they photosynthesise?	mustn't I be photosynthesising? mustn't you be photosynthesising? mustn't he be photosynthesising? mustn't we be photosynthesising? mustn't you be photosynthesising? mustn't they be photosynthesising?
Perfect	V-ing perfect
mustn't I have photosynthesised? mustn't you have photosynthesised? mustn't he have photosynthesised? mustn't we have photosynthesised? mustn't you have photosynthesised? mustn't they have photosynthesised?	mustn't I have been photosynthesising? mustn't you have been photosynthesising? mustn't he have been photosynthesising? mustn't we have been photosynthesising? mustn't you have been photosynthesising? mustn't they have been photosynthesising?