一般将来时的句型结构主要有以下几种：
肯定句
主语 + will/shall + 动词原形
例如：I will go to the store later today.
否定句
主语 + will/shall not + 动词原形
例如：I will not be able to attend the meeting tomorrow.
疑问句
Shall I/we + 动词原形？
例如：Shall we go out for dinner tonight？
be going to + 动词原形
例如：They are going to have a party next Friday.
am/is/are + going to + 动词原形
例如：I am going to study abroad next year.
am/is/are + to + 动词原形
例如：She is to arrive at the station at 3 PM.
be about to + 动词原形
例如：He is about to start the meeting.
这些结构都可以用来表示将来某个时间将要发生的动作或存在的状态，有时还可以表示计划、安排或打算要做的事。希望这些信息对你有所帮助。