It was not until 11o"clock yesterday that tom finished all his homework,为啥用that不用when?
问题描述：
It was not until 11o"clock yesterday that tom finished all his homework,为啥用that不用when?
答
这里的it is that 表示的是强调句型，后面的tom finished all his homework作为it 的主语，一个意思。所以，应该用that.对于强调句型，楼主应该多练习，注意理解
希望能够帮到楼主
晓篱 敬上
答
强调句型，句式it is/was …that…
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
答
这是个强调句型 it is。。。。。。。。that。。。。。。。。。