大家想要更好的了解文章的内容就需要对英语Unit5重点句子讲解进行一定的了解和学习，不知道下面的这些句子大家是否都了解它的语法知识了呢?

1. Only then did we decide to answer violence with violence.

only 放在句首且后接状语时(作状语：副词;介词短语;状语从句)，要使用部分倒装------才用一般疑问句语序。

Only yesterday did his father tell him the truth.

Only when his father came back did he go to bed. (从句无需倒装，主句要倒装)

2. He strongly believed in the three principles: nationalism; people’s rights; people’s livelihood.

他主张三民主义：民主、民权、民生。

3. I felt bad the first time I talked to the group.

the first time 用法相当于连词用法，用来引导从句

链接：It’s the first time that 现在完成时 It was the first time that 过去完成时

4. He taught us during the lunch breaks and the evenings when we should have been asleep.(should have done 本应做而未做)

needn’t have done 本不应做而做了 can’t have done 过去不可能做过

以上就是高一英语Unit5短语的内容，也是我们在英语学习中最常见的短语，希望大家都可以牢记并且学会运用。

相关链接

新人教版高一英语上册第四单元知识点

新人教版高一英语Unit5短语归纳总结