模板一 Dear 。。。。 It is my great pleasure to invite you to come and work in my laboratory in the School of 。。。。。。 as a part of your PhD training with 。。。。l University.
The period of training in my laboratory will be for 12 months beginning in September of 2010. It is my understanding that your stipend and health insurance will be covered by a scholarship from China. I will provide the necessary funds for the supplies required for you to undertake research within my group. No tuition payment will be required by T。。。
I would also like to point out in this letter that I am satisfied that you（。。。）meet our standards in English language proficiency for foreign students. We are looking forward to the time that you will spend with us. I have no doubt that you will make a valuable contribution to our research. Yours sincerely, 模板二
To Whom It May Concern,
This letter is to invite Mr. xx xx’s as a visiting scholar to the University of xx. Mr. xx, born in December xx, 19xx, comes from the School of xx, University xx, where he is currently a Ph.D. student. I have communicated with Mr. xx for several times and can attest that his English level satisfies our requirements for a visiting scholar. Mr. xx’s visit period will be up to 18 months, from September, 2010 to February, 2012. Mr. xx’s expenses in the US including travel, living and health-care for the duration of his visit will be fully covered by the China Scholarship Council. There is no tuition requirement for visiting scholars. Mr. xx will focus, during his stay at xx, on the mobile internet applications and the location based services under my supervision. Mr. xx’s visit will help several ongoing projects. He will collaborate with other team members under my advice, as well as my students. Please facilitate the paper work necessary to process his visit. Thank you very much. Sincerely, xx xx