1. Be confidence!Confidence devied from knowledgement.
2. Be well prepared, especially for the Resume. Any item writed in the resume shall be ready for questioned in English.
3. Be honest, but flexible.
I‘am in An US company,for interview in Englishi in my opinion:HR asked severial simple question,such as introduce yourself & you major,and some professional question will be asked by department Mrg.unlessthe Departments mrg is foreigner,he will talk you in chinese.
From the above reply,I find some mistakes.for example,the six floor "and some professional question"→"and some professional questions,"he will talk you in chinese",→"he will talk to you in chinese".