例句：
If only you had told me that some time ago.
要是你之前告诉我那件事该多好。
If only he'd remembered to send that letter.
要是他没忘记发那封信就好了。
If only I could have helped put matters right.
要是我当时能帮着把错误纠正过来就好了。
'If only I had known you then,' he said wistfully.
“要是我那时认识你就好了。”他向往地说道。