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 must not photosynthesise you must not photosynthesise he must not photosynthesise we must not photosynthesise you must not photosynthesise they must not photosynthesise	I must not be photosynthesising you must not be photosynthesising he must not be photosynthesising we must not be photosynthesising you must not be photosynthesising they must not be photosynthesising
Perfect	V-ing perfect
I must not have photosynthesised you must not have photosynthesised he must not have photosynthesised we must not have photosynthesised you must not have photosynthesised they must not have photosynthesised	I must not have been photosynthesising you must not have been photosynthesising he must not have been photosynthesising we must not have been photosynthesising you must not have been photosynthesising they must not 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
must I not photosynthesise? must you not photosynthesise? must he not photosynthesise? must we not photosynthesise? must you not photosynthesise? must they not photosynthesise?	must I not be photosynthesising? must you not be photosynthesising? must he not be photosynthesising? must we not be photosynthesising? must you not be photosynthesising? must they not be photosynthesising?
Perfect	V-ing perfect
must I not have photosynthesised? must you not have photosynthesised? must he not have photosynthesised? must we not have photosynthesised? must you not have photosynthesised? must they not have photosynthesised?	must I not have been photosynthesising? must you not have been photosynthesising? must he not have been photosynthesising? must we not have been photosynthesising? must you not have been photosynthesising? must they not have been photosynthesising?