PRESENT PERFECT AND PRESENT PERFECT CONTINUOUS,   5 DIFERENCES.

 present perfect :                                                                                                                                          1°- We use the Present Perfect to say that an action happened at an unspecified time before now. The exact time is not important.

2°- The auxiliar verb to form the present perfect is have.

3°-In the negative sentences the auxiliar have/has become into haven't/hasn't.

4°-this don't says if there action is ended.

5°-  this is considered to long duration.

present perfect continuoues:

1°- this is a indirectly report on the present.

2°- Use this tense also to talk about actions that began in the past and have recently stopped.

3°- The structure of the present perfect continuous is: subject + have/has + verb to be in past participle + verb with ing + complement.

4°- In its negative form the uxiliar have/has changes in haven't/hasn't.

5°- we refer to actions that were initiated in the past and at present are being developed