If the politicians had kept their words, our country ---- a suitable place to live in.
'If the politicians had kept their words' (Past Perfect) থাকায় main clause এ 'our country would have been a suitable place' (would + have + been) বসবে।
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Had he known anything' (Past Perfect এর ইনভার্সন) এর সাথে main clause এ 'he would have told me' (would + have + past participle) বসবে।
'If you had lent me some money' (Past Perfect) থাকায় main clause এ 'I would have been grateful to you' (would + have + been + adjective) বসবে।
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