present perfect continuous tense

zor konudur üstad ya..
kısaca üstünden geçecek olursak :

we use the present perfect continuous:

-to put emphasis on the duraction of an action which started in the past and continuous up to the present, especially with words and expressions such as for, since, all morning/day/year, etc.
*Sean has been writingletters all morning.

-for an action which started in the past and lasted for some time. the action may have finished or may still be going on. the result of the action is visible in the present.
*Mrs Lyon is upset. her students have been misbehavingsince lunchtime.

-to express anger, irritation or annoyance.
*some has been throwingtheir rubbish into my garden.

note :
-with the verbs live, work, teach and feel (=have a particular emotion) we can use the present perfect or present perfect continuous with no difference in meaning.
*she has taught/has been teaching Physics for more than fifteen years.

time expressions we use with the present perfect continuous:
for, since, how long, lately, recently

note :
-already is used in statements and questions in mid or end position.
*have you already finished? have you finished already?

-yet is used in negative sentences after a contracted auxiliary verb or at the end of the sentence.
*she hasn't yet called me. she hasn't called me yet.

-still is used in statements and questions after the auxiliary verb before the main verb. it comes before the auxiliary verb in negations.
*i am still reading the newspaper. he still works for the same company. she still hasn't singed the contract.

bir alt modeli için* lütfen tıklayınız (bkz: #6776883)
bu arada iyiki kısaca üstünden geçiyodun mal dediğinizi duyar gibiyim.. kısası bu ben napim şimdi ya* *