you must open the door.open是不带to的不定式么

问题描述:

you must open the door.open是不带to的不定式么

you must open the door.
这一句是祈使句.
情态动词must后加动词原形,不带不定式.
must
We must obey orders.
我们必须服从命令.
I must shut the door, or the rain will come in.
我必须把门关上,不然雨就进来了.