#simple present tenses : (+the teacher came)  (- the teacher didn't come) (? did the teacher come) 

#past future : Rumus Past Future TensePositif: S + would + V1. Negatif: S + would + not + V1. Tanya: Would + S + V1. (+I would go at 7 am when He came to my house yesterday) (-You would not work …..) (?Would They drive home ......)

Simple present tenses : I buy book
simple past tenses     : I ate bread yesterday
present future : I will buy book
past future: I could not do it
simple present tanse : i'am go to school every day.