1.Soon I was back on my feet again and following him to collect a hovering carriage driven by computer.
主系表结构：主语I,was系词,后边的是表语.
2.These carriage float above the ground and by bending or pressing down in your seat,you can more swiftly.
并列句：and连的两个简单句
These carriage float above the ground是主谓结构：These carriage 是主语,float是谓语.
by bending or pressing down in your seat,you can more swiftly.是主谓结构,原句好像少了个谓语动词.请问第一句用的是什么句型？是从句吗？第二句后面不差词，书上是这么写的还是很感谢你~看了一会，我突然明白了，第二句不缺词，是move，你写成more了。这就好办了。在by bending or pressing down in your seat,you can move swiftly.中主语是you，谓语是move。其他的是状语。本句是主谓结构。补充回答：第一句是单句，指主系表句型，只是后边的 a hovering carriage driven by computer中用了过去分词做定语了。不是从句。