Learn English – “Having been named” is past perfect passive

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Here is a question for the GMAT exam:

Having been named for a mythological nymph who cared for the infant Jupiter, the asteroid named Ida in the middle of the belt of asteroids that orbit the Sun between Mars and Jupiter, was discovered in 1884

For those of you unfamiliar with the test, basically you are given a short statement with some underlined part. You have to decide if you keep the underlined part as is (option A) or if you substitute it with one out of 4 options (options B,C,D,E).

Here the whole statement is underlined

Now in the solution, it says that the "keep it" option (option A) is wrong because

Opening with a past perfect passive verb, Having been named, this version of the sentene illogically suggests that being named for a mythological nymph preceded the discovery of Ida

My question is: why "Having been named" is a past perfect passive?
The past perfect (active) should be formed by:
Subject + had + past participle
And thus the passive one:
Subject + had + been + past participle

So what tense is Having been named really if it is not a past perfect passive?

Best Answer

According to the British Council the pattern having been + past participle is not the past perfect passive but a perfect participle which indeed indicates the order of events:

If we wish to emphasise that one action was before another then we can use a perfect participle (having + past participle):

Having won the match, Susan jumped for joy.

Having been told the bad news, Susan sat down and cried.

This said, the test is correct, that is, the perfect participle is improperly used. In terms of grammar this source says that it's called perfect participle, and of course, in your case, passive.

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