高階ENGL-COND-010
Identify the correct inversion in a conditional sentence.
A. Had I known about the meeting, I would have attended.✓ 答案
B. If I had known about the meeting, I would attend.
C. Were I known about the meeting, I would have attended.
D. Had I known about the meeting, I would attend.
解說
Inversion in third conditional: 'Had + subject + past participle' replaces 'If + subject + had'. Option A is correct: past condition + past result. B uses 'if' (no inversion) but wrong result, C is ungrammatical, D mixes past condition with present result.