介绍:
否定肯定的转换
否定后移法
例句：
I don't think he will come.
It is not my opinion that he is the best man for the job.
否定肯定的转换
特殊结构
例句：
The wood bridge is anything but safe.
I have yet to leam the new kill.
You might as well burn the book than give them to her.
We cannot finish the work in the absence of these conditions.
That lazy boy went to class before he had prepared his lesson.
I missed what he said because of the noises.
