GRAMMER

Present tense:
a) 1+s  (one person/thing/concept, choose the one WITH's')
-he is, she goes, the girls plays,it sleeps

b) >1+s (more then one person/thing/concept, choose the  one WITHOUT's')
-they are, we go, this girls play, they sleep

c) am/is/are +ing
-i am going, he is singing, the cast are fighting

Past tense:
a) +ed/change spelling
-go-> went, has/have ->had

b) was/were + ing
-i was going, he was singing,  the cats were fighting

FOCUS ON:
a) to + ori (after'to' use the original word with no 's', 'es', 'ing', 'ed' and 'n')
-to sing, to try, to give

b) modal + ori (can, could, shall, should, will, would, must, may, cannot, shouldn't, wouldn't etc)
-can sing, could try, shouldn't give