is that after Mary's refusal he made up his mind never to think of marrying again
问题描述：
is that after Mary's refusal he made up his mind never to think of marrying again
答
句子一定打错了.楼主想说的应该是It is after Mary's refusal that he made up his mind never to think of marrying again.这是一个强调句.结构是It is+（需要强调的部分）+that+从句.意思是：自从被Mary拒绝之后,他决心终身不再考虑婚嫁之事.