present perfect simple & progressive

+
1. I have worked
-
1. I haven't worked
?
1. Have you worked?
present perfect simple
uses
1. to talk about an action which happened in the past but the exact time is not mentioned
  1. example: I've already done that
2. to talk about a state which started in the past and continues up to the present
  1. example:Mary has had this mobile phone since September
3. to talk about an action that happened in the past and finished but the results are abvious in the present
  1. example: I've just finished my project
Time expressions: just, yet, already,never ,ever,before, always,for ,since ,so far, how long, once,etc.
present perfect progressive
+
1. I have been working
-
1. I haven't been working
?
1. Have you been working ?
uses
1. to emphasise the duration of a state or action which started in the past and continues to the present
  1. example: I've been learning English for 6 years
2. to talk about an action which happened over a period of time in the past and may have finished but the results are abvious in the present
  1. example: we've been walking around all day. that's why we're so tired
Time expressions: for, since, how long, all day/week,etc.

Resource summary

	Created by Jood about 8 years ago