It was not until 11o"clock yesterday that tom finished all his ho_英语解答

It was not until 11o"clock yesterday that tom finished all his homework,为啥用that不用when?

人气：184 ℃　时间：2020-04-11 02:20:10

解答

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