PRESENT PERFECT TENSE PRESENTATION

Presentation

present perfect tense

written by:Keanu

definition

Present perfect tense is a sentence to express our past activity and have connection or related with what we do at present time.

transformation

V1=eatV2=ateV3=eatenV1=seeV2=sawV3=seen V1=beeV2=wasV3=been V1=fallV2=fellV3=fallen V1=findV2=foundV3=found

formula

(+)= Subject+Have /Has+V3+Adverb(-)= Subject +Have /Has not+object+adverb (?)= Have/?Has+subject+V3+Object+adverb

example

I have eaten my bread 2 minutes agoI have not eaten my bread 5 minutes ago Has she eaten her bread yet?

comparison

SINCE

FOR 1. Function In English, we use for to indicate a certain period of time or how long something happened. In other words, for functions to explain the duration or duration of an event. This time period can be seconds, minutes, hours, days, months, even years. The time period for using for can be stated specifically or non-specifically. Example: I've lived here for nine years. (I've lived here for nine years) –> time period is specifically mentioned. I've lived here for years. (I've lived here for years) –> time period not specifically stated.

Function In the context of time, since functions to show since when something happened or at what point in time something happened. In contrast to for which can use an unspecific time period, for since we must include a specific time point. Example: I've lived here since 2010. (I've lived here since 2010). I've lived here since nine years ago. (I've lived here since nine years ago). I've lived here since I graduated from college. (I've lived here since I graduated from college).

FOR

thanks!

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