几个高中英语句子（帮我分析下语法）。20分悬赏

几个高中英语句子（帮我分析下语法）。20分悬赏
我是高一的学生。有几个英语问题。Earthquake safety is very important and there is more to it than just keeping buildings from falling down.(这句主要是there is more to it than just keeping buildings from falling down.比方more to it是什么？看不大明白，可以解说下么？）When windows break,glass can cause many accidents.It is better to use safety glass if you can,especially for pictures.(这句主要是especially for pictures看不大明白，可以解说下么？）There was no stopping the fires.(这是什么结构呢？看不懂？）Sometimes whole families put everything they owned and could save into wagons.(and could save into wagons。什么情况？在这里是什么语法现象）。希望你们尽量能详细一点。看得懂才给分。这些句子都摘自人教版必修1 的P64和65.