Difference between present perfect and present perfect continuous tenses

Ngày tải lên: 11/07/2015, 13:26

Ngày tải lên: 11/07/2015, 13:26

Ngày tải lên: 29/08/2016, 18:03

Ngày tải lên: 29/08/2016, 19:12

Ngày tải lên: 11/07/2015, 13:26

Ngày tải lên: 29/08/2016, 19:12

... measuring fPSA and calculating the percentage of fPSA aids in distinguishing cancer from other benign prostate conditions such as benign prostate hyperplasia, particularly for the population in the ... assays differ in calibration and response to different PSA forms We examined intermethod differences in total PSA (tPSA) and free PSA (fPSA) measurements We te...

Ngày tải lên: 21/03/2014, 12:19

... this article as: Kanji et al.: Difference between pre-operative and cardiopulmonary bypass mean arterial pressure is independently associated with early cardiac surgery -associated acute kidney ... = acute kidney injury; CABG = coronary artery bypass graft, CPB = cardiopulmonary bypass; MAP = mean arterial pressure; PRBC = packed red blood cell T...

Ngày tải lên: 10/08/2014, 09:22

... similarity In this study the characteristics of genes (and the proteins that they specify), derived from small-scale and wholegenome duplication (small-scale duplicates [SSDs] and whole -genome duplicates ... Collectively, our results demonstrate that the differences between the two types of duplicate are not limited to the way in which they were generated Investi...

Ngày tải lên: 14/08/2014, 08:20

... fail the project A college student might fail the class and be suspended for a year In some colleges and universities, a student or professor caught plagiarizing might be told to leave and never ... long as where the material came from is identified Any material copied word-for-word is supposed to appear inside quotation marks Where people get in trouble is when they try to claim...

Ngày tải lên: 14/08/2014, 21:21

... 4 It is your turn to take the kids to the park The villagers often have to walk miles to fetch water Be first to know when grammar rules change! Sign up

Ngày tải lên: 11/07/2015, 13:26

... They have four babies and six dogs on their hands Be first to know when grammar rules change! Sign up to our newsletter here: englishgrammar.org

Ngày tải lên: 11/07/2015, 13:26

... They have four babies and six dogs on their hands Stay on top of your writing! Download our grammar guide from www.englishgrammar.org to stay up-to-date Powered by TCPDF (www.tcpdf.org)

Ngày tải lên: 29/08/2016, 18:03

... We’re waiting We’ve been waiting for an hour                 Present perfect continuous and simple Unit 10 Present perfect continuous and simple A Nghiên cứu ví dụ sau: Ann’s clothes are covered ... present perfect simple (thì hoàn thành): Ở này, điều quan trọng hoàn thành hành động Has painted hành động hoàn tất Chúng ta quan tâm đến kết hành động thân hành động So...

Ngày tải lên: 19/01/2014, 17:20

... have done everything Khi xong việc goi cho bạn  Lưu ý: hành động tương lai dùng Present perfect Present Perfect Continuous Công thức: Subject + have/has + been + V-ing Trong đó:  Have: dùng ... Present Perfect Công thức: Subject + have/has + PP (PP: past participle – khứ phân từ) :  Have: dùng ... red Have you been crying for long time? Mắt em đỏ Có phải em khóc lâu không? Cá...

Ngày tải lên: 02/03/2014, 15:18