Present Tense
Simple=S + V1
Countinuous=S + V to be + Ving
Perfect=S + V to have + V3
Perfect Countinuous=S + had +been + Ving
Past Tense
Simple=S + V2
Countinuous=S + was/were + Ving
Perfect=S + had + V3
Perfect Countinuous=S + had +been + Ving
Future Tense
Simple=S +will + V1
Countinuous=S + will + be + Ving
Perfect=S + will + have/has + V3
Perfect Countinuous=S +will + have/has + been + Ving