I should theorise you should theorise he should theorise we should theorise you should theorise they should theorise
V-ing form
I should be theorising you should be theorising he should be theorising we should be theorising you should be theorising they should be theorising
Perfect
I should have theorised you should have theorised he should have theorised we should have theorised you should have theorised they should have theorised
V-ing perfect
I should have been theorising you should have been theorising he should have been theorising we should have been theorising you should have been theorising they should have been theorising
Negation
Simple form
I should not theorise you should not theorise he should not theorise we should not theorise you should not theorise they should not theorise
V-ing form
I should not be theorising you should not be theorising he should not be theorising we should not be theorising you should not be theorising they should not be theorising
Perfect
I should not have theorised you should not have theorised he should not have theorised we should not have theorised you should not have theorised they should not have theorised
V-ing perfect
I should not have been theorising you should not have been theorising he should not have been theorising we should not have been theorising you should not have been theorising they should not have been theorising
Interrogative form
Simple form
should I theorise? should you theorise? should he theorise? should we theorise? should you theorise? should they theorise?
V-ing form
should I be theorising? should you be theorising? should he be theorising? should we be theorising? should you be theorising? should they be theorising?
Perfect
should I have theorised? should you have theorised? should he have theorised? should we have theorised? should you have theorised? should they have theorised?
V-ing perfect
should I have been theorising? should you have been theorising? should he have been theorising? should we have been theorising? should you have been theorising? should they have been theorising?
Interro-negative form
Simple form
should I not theorise? should you not theorise? should he not theorise? should we not theorise? should you not theorise? should they not theorise?
V-ing form
should I not be theorising? should you not be theorising? should he not be theorising? should we not be theorising? should you not be theorising? should they not be theorising?
Perfect
should I not have theorised? should you not have theorised? should he not have theorised? should we not have theorised? should you not have theorised? should they not have theorised?
V-ing perfect
should I not have been theorising? should you not have been theorising? should he not have been theorising? should we not have been theorising? should you not have been theorising? should they not have been theorising?