初中英语语法知识点总结21篇 如：Had you (If you had) invited us, we would have come to your party.(2)混合时间条件句的用法：有时条件从句的动作和主句动作发生的时间不一致。这时动词的形式，应根据它所要表达的具体时间来决定用什么形式。1) If she hadn’t trained so hard, she wouldn’t be run so fast.(从句叙述过去，主句叙述现在。)(fact: she has trained very