例句：
If only you had told me that some time ago.
要是你之前告訴我那件事該多好。
If only he'd remembered to send that letter.
要是他沒(méi)忘記發(fā)那封信就好了。
If only I could have helped put matters right.
要是我當時(shí)能幫著(zhù)把錯誤糾正過(guò)來(lái)就好了。
'If only I had known you then,' he said wistfully.
“要是我那時(shí)認識你就好了�！彼蛲卣f(shuō)道。