present+perfect+simple+vs+past+simple

Click here to check how to form the present perfect simple Click here to check how to form the past simple

USES
In British English, the use of Simple Past and Present Perfect is quite strict. If you are told **WHEN** something happened , you have to use the ** PAST SIMPLE **. If there are no signal words, In American English, you can use the past simple instead of the present perfect simple.
 * use the ** PAST SIMPLE ** to  talk about an action in the past
 * use the ** PRESENT PERFECT SIMPLE ** to indicate that its consequence in the present is important.

SIGNAL WORDS

 * **PAST SIMPLE:** //when, yesterday, ...ago, in 1990, last..., the other day...//
 * **PRESENT PERFECT SIMPLE:** //just, already, yet, ever, so far, recently, lately, up to now, till now, until now...//

[|exercise 1] (elementary) [|exercise 2] (elementary) [|exercise 3] (elementary) [|exercise 4] (elementary) [|exercise 5] (elementary) [|exercise 6] (elementary) [|exercise 7] (elementary) [|exercise 8] (elementary) [|exercise 9] (elementary) [|exercise 10] (elementary) [|exercise 11] (elementary) [|exercise 12](pre-elementary) [|exercise 13](pre-elementary) [|exercise 14](pre-intermediate) [|exercise 15] (pre-intermediate) [|exercise 16] (pre-intermediate) [|exercise 17] (pre-intermediate) [|exercise 18] (pre-intermediate) [|exercise 19] (pre-intermediate) [|exercise 20] (pre-intermediate) [|exercise 21] (pre-intermediate) [|exercise 22](pre-intermediate) [|exercise 23](pre-intermediate) [|exercise 24] (intermediate) [|exercise 25](intermediate) [|exercise 26](intermediate) [|exercise 27](intermediate) [|exercise 28](intermediate)
 * online exercises**

[|English Grammar Online]
 * useful links**