How do you say there is so much to in french?

There are a few ways to say "there is so much to do" in French, depending on the context and nuance you want to convey:

Formal:

* Il y a tellement de choses à faire. (There are so many things to do.)

* Il y a tant à faire. (There is so much to do.)

Informal:

* Y'a tellement de trucs à faire. (There are so many things to do.)

* Y'a plein de choses à faire. (There are lots of things to do.)

* On a tellement de choses à faire. (We have so many things to do.)

Emphasizing a lot:

* Il y a une quantité incroyable de choses à faire. (There is an incredible amount of things to do.)

* Il y a un tas de choses à faire. (There are a bunch of things to do.)

* Il y a des tas de choses à faire. (There are tons of things to do.)

You can also adapt the phrase to specific situations:

* Il y a tant à voir à Paris. (There is so much to see in Paris.)

* Il y a tant à apprendre à l'école. (There is so much to learn at school.)

The best phrase to use will depend on the specific situation.