Sentence improvement — correct conditional form in the 'if'-clause: use past perfect 'had tried' → 'If he had tried, he would have succeeded.'

Given sentenceIf he would have tried he would have succeeded.

Concept/ApproachIn standard English, the if-clause of a third conditional uses the past perfect, not 'would have': If + had + past participle → would have + past participle.

CorrectionIf he had tried, he would have succeeded.

Why others are wrong'is tried'/'was tried' → change meaning (passive) and tense; 'No improvement' leaves a common learner error.

Final Answerhad tried