A plane is a machine that can fly.这个that在句中承担的是什么成分?主语还是宾语?

问题描述:

A plane is a machine that can fly.
这个that在句中承担的是什么成分?主语还是宾语?

A plane is a machine that can fly.
这个that在句中承担的是:
两个头衔!
1.做主句表语a machine 的定语从句的引导词!
2.在从句中担当主语!
就这样!