强调句的用法大家肯定已经很熟悉了，尤其是it做形式主语的强调句型。可是当句子里有not…until…的时候，很多朋友还是会搞混。今天我就跟大家一起挖一挖not…until…的强调句用法。
强调句的结构很简单，就是It is+被强调部分+that/who+…。比如陈述句：Tom lent me money when I was in trouble.我需要强调主语，句子就会写成这样：It was Tom who lent me money when I was in trouble.把我们要强调的部分Tom提前到that/who前面，然后其余的部分按照原顺序放在后面就好了。
可是，not…until…结构是不同的。它们是一体的，如果想要强调until后面的部分，不仅仅需要把until部分提前，还要把not一起提前才可。整个句子相应的也会有一点改变。例如：I didn’t realized that she was one of my classmates until she took off her sunglasses. 直到她脱下太阳镜我才认识到她是我的一个同学。如果我们想要强调直到她脱下太阳眼镜，该怎么办呢？我们需要把not和until she took off her sunglasses一起提前到that前面。It was not until she took off her sunglasses that I realized that she was one of my classmates.
试将下列句子改为it is…that…强调句，强调until部分。
1: Tom didnt go to sleep until the programme was over.
2: Tom didn’t understand it until his teacher had explained it three times.
3: I won’t leave until you give me my money.
4: They didn’t begain the lunch until I came back.
参考答案：
1: It was not until the programme was over that Tom wen to sleep.
2: It was not until his teacher had explained it three times that Tom understood it.
3: It is not until you give me my money that I will leave.
4: It was not until I came back that they begain the lunch.
请按照上述的理论套用强调句的格式即可。
朋友们明白了吗？欢迎留言讨论。
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