The boy didn't go to bed until his mother came back同义句转换
问题描述：
The boy didn't go to bed until his mother came back同义句转换
1.___ ___ his mother came back ____ the
boy____to bed.
2.___ ___ ___ ___his mother came back ____ the boy ____to bed.
是倒装句
答
It was not until his mother came back that the boy went to bed.其中 it was not until .that...=sb not ..until+句子