From an ESL textbook.
Write about something you accomplished : What did you accomplish ? How long had you been preparing for it ?
How had you been preparing ?
I don't know why it sounds weird to me. :( ??
From an ESL textbook.
Write about something you accomplished : What did you accomplish ? How long had you been preparing for it ?
How had you been preparing ?
I don't know why it sounds weird to me. :( ??
I don't see any sense in a single question in past perfect. Past perfect is used in reference to another statement in the past, expressing a chronological order. The statement in Past Perfect concerns something that was before the statement in Past Tense:
It should not sound weird to you. If it does it might be because you don't see this structure very frequently. This is the past perfect and it is only used for a very specific situation. It's a past tense about something that happened before something else previously mentioned.
Other Latin languages such as Spanish and French have exactly the same structure.
In my opinion there's no an overuse of past perfect here, like in the link I provided:
NOTE
The most common mistake with the past perfect is to overuse it or to use it simply because we are talking about a time in the distant past.
The Romans had spoken Latin.
Remember that we only use the past perfect when we want to refer to a past that is earlier than another time in the narrative.
In our particular case there are two different past event sequences. However this can be transformed in two different past event sequences using simple past:
What did you accomplish ? How long did you prepare for it ? How did you prepare ?
or to make it clearer we can use the adverb before:
What did you accomplish ? How long did you prepare for it before? How did you prepare before?
This said the use of either past perfect or past simple, in my opinion, depends on laying emphasis, focusing, style, etc. though there might be cases (too many different past event sequences) when the use of past perfect becomes compulsory.