① If only she had not eaten so much garlic last night.

② Would to God that I were as strong as Charlie!

③ Oh, that the end might never come!

④ It’s high time they made friends with each others.

⑤ But for your kind help, I would have to give up the whole plan.

= If it were not for your help, I would have to give up the whole plan.

⑥ I started off at once; otherwise I would have missed the last train.

= I started off at once; if I had not started off at once, I would have missed the last train.

⑦ The story was told in confidence, otherwise I would tell you.

⑧ One more effort, and he would have done well.

= If he had made one more effort, he would have done well.

⑨ He requested that all his mail (should) be redirected to his new address.