stop somebody (sth) from ... ing 阻止某人做某事，不让某人做某事

stop somebody from ... ing 表示“阻止某人做某事”或“劝别人不做某事”等。

例句：

I couldn't stop you from doing this.

我不能阻止你做这事。

Why did she stop me from dating Adam?

她为什么要阻止我和亚当约会呢？

I came running to stop her from leaving.

我跑过来是要阻止她离开的。

对话：

A: There are too many items on that table.

桌子上有太多东西了。

B: We need to stop it from falling over.

我们不能让这些掉下来。