Should you have any quesions concerning the procedure of application, contact this office ______.

A. at any time you like 

B. any time you like

C. whenever is suitable to you

D. at whatever time is suitable to you.

【答】曹老师又出题难为我们了，我尽力解答试试。

1. 答案为D。 whatever time is suitable to you 是名词性从句，作at的宾语。意为：“在适合你们的任何时间里”。

2. 本句Should you have any quesions concerning the procedure of application 是省略了If 的倒装语序，正常语序为：

If you should have any quesions concerning the procedure of application, contact this office any time you like.

3. 情态动词should，用在条件从句中表示事件发生的可能性，意为“将要；假定要；可能要”。You use should in conditional clauses when you are talking about things that might happen. 例如：

If you should be fired, your health and pension benefits will not be automatically cut off.

如果你被解雇，你的医疗和养老保险金不会自动中断。

Should you buy a home from Lovell, the company promises to buy it back at the same price after three years.

如果你从洛弗尔公司买房子，该公司承诺3年后以同样的价格再购回。

【说明】答案C 错误明显；答案A 貌似正确，但at any time 一般单独使用，不接you like 之类的从句。关于答案B. any time you like 是时间状语从句，any time 具有连词的作用，相当于whenever。也就是说：any time you like 等于 whenever you like。但是，这种省略的表达，常见于非正式语体（口语）。

▲ 本句中，should 的这种倒装用法比较正式，常用于诸如公函之中，而不用于日常会话。考虑到整个句子的语体，主从句应避免语体上的矛盾。因此，选择较为正式的表达：at whatever time is suitable to you.

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