Modal verbs

prsnt simpl: sj+vrb inf./ e, s, it cn s/ prsnt. cont: sj + am/ar/is + vrb ing/ past simpl: sj + vrb2ª/ comnz. y acb. en pasad./ past cont: sj + was/were + v. ing/ sucedio momet. concret. pasad./ past perfect: sj + had + 3ª/ referirse accion pada, anter. a otra tambn pasad./ presnt perf simp: sj + have/has + v.3ª/ acc. comenz pasado cont. actualid/ pres. perf. cont: sj + have/has + been + v.ing/ procesos activid. o durac./ will: sj + will+ verb./ predicc. de fut./ be going to: sj + be + going to + verb/ interacc. planes pa fut. cercan./ fut. contin: will +  be + ing/ accion sucedera 1 moment. espec. fut./ future perfect: will + have + 3ª/ acc. terminara mom. esp. fut.

abilidad: can/can´t?pres. simpl/ colud/couln´t?pst simp/ be able to?resto/ permiso: can/ could..?/ may i ...??formal/ obligation: must/ have to/ need to/ prohibition: mutn´t/ don´t have to?no es necesario/ consejo: should/ shouldn´t/ ought to/ posible: may: -posible/ might: + posible/ could: you could win the lotery/ deduction: must: afirmativa, deve/ can´t: negativa, poder/ perfect form of modal verbs: sj + modal verb + have (not) + verbo 2ª