「もうすぐ」は、あることがすぐに起こる時に使う言葉です。

"もうすぐ" is a word used when something is about to happen soon.

「もうすぐ夏だね」のように、近い未来を話す時によく使います。

It is often used to talk about the near future, as in "もうすぐ夏だね" (Summer is coming soon).