在英语中，形容电脑卡顿的常用表达包括：

The computer is running very slowly.

The computer is freezing.

My screen keeps freezing.

The computer is down.（这个表达不太准确，更准确的应该是屏幕冻结或电脑无响应）

The network is slow.

The network is out of control.

这些表达可以帮助你更准确地描述电脑卡顿的情况，让他人更容易理解问题的具体情况。