can not but例句

Since the time of shipment can not be fixed, I can not but worry about it.
交货期还没定下来, 我怎么会不着急呢?

One can not but be moved by his fate.
人们不能不为他的命运所感动.

We can not but listen to the command of the powerful department.
我们不得不听从强力部门的指挥.