Grammer tense

應該係話睇下你想講咩:
Simple present:
I am happy today.

Simple past
I saw John today (maybe this morning)

Simple future
I will visit John today (maybe this afternoon)

Present continuous
I am not feeling very well today

Present perfect
I have finished the project today!

Tense 一定要有上文下理, 唔可以就咁睇一字去決定用咩TENSE

Present perfect