ZERO. IF+SUBJ+PRESENT S.+COMPL (,) SUBJ+ PRESENT *COSES OBVIES
FIRST. IF+SUBJ+PRESENT+COMPL (,) SUBJ+WILL+PRESENT. *FUTUR COSES PROBABLES.
SECOND. IF+SUBJ+PAST SIMPLE+ COMPL (,) WOULD+INFINITIU.
THIRD. if + past perfect, ...Would + have + past participle.
|present simple||I make a cake.||A cake is made (by me).|
|present continuous||I am making a cake.||A cake is being made (by me).|
|past simple||I made a cake.||A cake was made (by me).|
|past continuous||I was making a cake.||A cake was being made (by me).|
|present perfect||I have made a cake.||A cake has been made (by me).|
|pres. Perf. Continuous||I have been making a cake.||A cake has been being made (by me).|
|past perfect||I had made a cake.||A cake had been made (by me).|
|future simple||I will make a cake.||A cake will be made (by me).|
|future perfect||I will have made a cake||A cake will have been made (by me).|