It was not until 11o"clock yesterday that tom finished all his homework,为啥用that不用when?
题目
It was not until 11o"clock yesterday that tom finished all his homework,为啥用that不用when?
答案
it ...that 是强调式.
强调的是时间状语:until 11o"clock yesterday
原句是Tom didn't finished all his homework until 11o"clock yesterday
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