did they notice
强调not until the thief left house.
可以转化为正常句型：
Although they were at home,(they didn't notice) him until the thief left the house.
强调句型用倒装,倒装括号内的内容就是了（否定词已经前提了）.
did they notice
强调not until the thief left house.
可以转化为正常句型：
Although they were at home,(they didn't notice) him until the thief left the house.
强调句型用倒装,倒装括号内的内容就是了（否定词已经前提了）.