Tense
Present Simple Past Simple Future Simple
S.+V.1 S.+V.2 S.+will+V.1
Present Continued Past continued Future Continued
S.+V.be+ing S.+V.be2+ing S.+will+V.1+ing
Present Perfect Past Perfect Future Perfect
S.+have,has+V.1 S.+had+V.2 S.+will have+V.1