一道关于英语强调句的题目ItwasnotuntilworldwarIIbrokeouttheyoungmanlefthishometowntofightagainsttheenemies.whywechoosethat,butnotwhen?我知道这是一个强调句,但是后半句是一个完整的句子啊,

Question

一道关于英语强调句的题目
It was not until world war II broke out ___ the young man left his home town to fight against the enemies.
why we choose that,but not when?我知道这是一个强调句,但是后半句是一个完整的句子啊,应该用关系副词when吧
那么如果说强调句不能用when,
为什么下面这题 was it 5 o'clock ___ he arrived?填when而不是that呢?
这中间有什么关系啊?
再说说怎么样区分强调句和状语从句吧

Answer 1

其实强调句与状语从句很容易区分
你把“it is ”和“that”都去掉,再看看剩下的句子是否完整就可.
就上面两个题来说
1.the young man didn't leave his home town to fight against the enemies until world war II broke out .
去掉“it is ”和“that”,句子仍是完整的.这就说明是强调句,强调句只是起一个强调作用,不改变句子本身的成分.
2.可先将疑问句还原
it was 5o'clock ___ he arrived.
如果选“that”,看做强调句.那去掉“it was ”和“that”
he arrived 5o'clock 不是完整句子 应为 he arrived at 5o'clock
所以是when引导的状语从句