问题描述：
I have to go to school
have to 作为一个整体做谓语,还是have 做谓语,to go to school做宾语?
但是have to 如果是整体,TO 应是介词,为什么后面不写成going呢?
have to 作为一个整体做谓语,还是have 做谓语,to go to school做宾语?
但是have to 如果是整体,TO 应是介词,为什么后面不写成going呢?
问题解答：
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