A.present
1.simple present
2.present continuous
3.present perfect
4.present perfect continuous
B.past
1.simple past
2.past continuous
3.past perfect
4.past perfect continuous
C.future
1.simple future
2.future continuous
3.future perfect
4.future perfect continuous
D.past future
1.simple past future
2.past future contiuous
3.past future perfect
4.past future perfect continuous
RUMUS
A1=S+V1+O
A2=S+TO BE+V1+ing+O
A3=S+have/has+V3+O
A4=S+have/has+been +V1+ing
B1=S+V2+O
B2=S+was/were+Vi+ing+O
B3=S+had+V3+O
B4=S+had+been+V1+ing+O
C1=S+will/shall+V1+O
C2=S+will/shall+be+V1+ing+O
C3=S+will/shall+have+V3+O
C4=S+will/shall+have+been+V1+ing+O
D1=S+would/should+V1+O
D2=S+would/should+be+V1+ing+O
D3=S+would/should+have+V3+O
D4=S+would/should+have+been+V1+ing+O
EXAMPLE
A1=i eat rice
A2=i am eating rice
A3=i have eaten rice
A4=i have been eating rice
B1=i ate rice
B2=i was eating rice
B3=i had eaten rice
B4=i had been eating rice
C1=i will eat rice
C2=i will be eating rice
C3=i will have eaten rice
C4=i will have been eating rice
D1=i should eat rice
D2=i should be eating rice
D3=i should have eaten rice
D4=i should have been eating rice
