The HR manager in Shanghai had interviewed me by telephone last time. 有具体时间的情况下（Last time 算，明确了上次，算具体时间），不用完成时态用一般过去时态。。
The HR manager in Shanghai interviewed me by the telephone last time.（不要掉了the）
Please give me some advise what should I do in the next step. 疑问句做句子成分不要倒装。should 应该在 I 后面。（肯定中学英语语法里有）
Please give me some advise what I should do in the next step.
=============================================================== Ref: Application Status Inquiring
Dear Weiky:
I applied the position as xxxx in your company, the HR manager in Shanghai interviewed me by the telephone last time, but I have not heared from you since then. Could you please tell me my application status or what I should do? your kind response is much appreciated!
上海HR经理上次已经电话面试过了.我想问下您，下一步该准备些什么？ The HR manager in Shanghai at last time，used telephone to interview me。 Could you tell me about next step how to do,please!
上海HR经理上次已经电话面试过了.我想问下您，下一步该准备些什么？ The HR manager in Shanghai at last time，used telephone to interview me。 Could you tell me about next step how to do,please!
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不客气的说，读起来非常别扭的。 这样的两个句子都应该算错句的。
at last time 表动作时间的状语是在动作之后，或全句之前，而不是中间。
about next step how to do 就是完全中式英文的循序。倒过来才对。另外：how to do 没怎么听说过。
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