Present Simple: I water flowers.
Present Cotinuous: I am watering flowers.
Past Simple: I watered flowers.
Past Continuous:I was watering flowers.
Future Simple: I will water flowers.
Future Perfect: I will have watered flowers.
Present Perfect: I have watered flowers.
Past Perfect: I had watered flowers
Present Perfect Continuous: I have been watering flowers.
Past Perfect Continuous: I had been watering flowers.
Future Perfect Continuous: I will have been watering flowers.