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The large house in a plush district of Pakistan's capital, Islamabad, that was once his home is now his prison.

Dr Khan has been confined to house arrest since his confession in February 2004 that, as the man who had helped deliver the nuclear bomb to his native Pakistan, he had gone on to transfer nuclear secrets and technology to an array of countries around the world.

Next to the main building sits a guesthouse in which Dr Khan used to entertain his friends and contacts, including many of the Western businessmen who worked closely with him.

Now, the guesthouse is the site of the security detail that monitors Dr Khan's movements and ensures there is no unauthorised contact between him and the outside world.

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His confession took place somewhere in 2004.

He did the real job of making a bomb 10 or more years before the confession.

Could we write today that 'he had helped deliver the nuclear bomb to his native Pakistan' and 'he had gone on to transfer nuclear secrets and technololgy to an array of countries around the world'?

I have difficulty in understanding the necessity of the past perfect tense here.

I would like to hear from you all.
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Comments  (Page 3) 
Our team lost the match today because the visitors played very well. However, we had won the previous tie nearly 4 weeks ago; so it is one all.

[ Would you approve the use of the past perfect tense in the above? Would you write 'we won' instead of 'we had won'?]
Again, it's optional here, not mandatory. The phrase '4 weeks ago' makes the sequence clear. On the other hand, there's no reason why you shouldn't use PP, and it sounds quite natural here.

Broadly speaking, it's not 100% necessary when the sentences include sequencing words such as first/ second, then, later, before/after, last week/this week etc. etc.

Best wishes, Clive
Thanks Clive

«When returning from Joe, I was catched by a thief. Thanks God, I had forgotten my wallet at Joe!»

In the above, is it optional to write the past perfect tense?

Would you write the following?

«When returning from Joe, I was catched by a thief. Thanks God, I forgot my wallet at Joe!»
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«Would you write the following?

"When returning from Joe, I was catched by a thief. Thanks God, I forgot my wallet at Joe!"»

I'd say it's very bad with Past Simple. However, Clive may find it still grammatically correct, but of course he'll prefer the Past Perfect version too.

«Not so easy to find a relevant context to write the past perfect, as far as I am concerned.»

Most of the considered examples sound better with the Past Perfect, therefore, they are more relevant for Past Perfect than for Past Simple...

«He disappeared as suddenly as it had appeared.» [Heroes of Might and Magic II]

«When he proposed me to watch «The Hedgehog in the Fog», I refused, because I had seen it before.»

And there are many cases, when Past Perfect is necessary:

1. «I had [already] finished my homework when he came.»

2. «When I met him for the first time, I had lived for two years in that town.»
Hi,

Yes, I agree with Ant's comments.

It's not an easy tense to master, but it just takes time. If you want to write some more 'conversations' and post them, I'd be happy to give you comments and suggestions.

Clive
I will be posting more and more on this whenever time permits.

I can't grasp it perfectly. I just have hunch that it works by pushing one action before the other.
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Well, you get the main idea...