Anthony will have to find a bottle and join the party.
(to find in its infinitive form)
I explained why I had no time too mow the lawn.
(should be to mow)
You must learn to listen more carefully.
Summary of To and Too
This infographic summarises the different uses of to and too:
Verbs are doing words like to dance, to sit, to fly, to think. (See lesson
When to is in front of a verb, the verb is said to be in its infinitive form.
She likes to dance. (< verb to dance in its infinitive form)
She dances. (< verb to dance not in its infinitive form)
As explained above, the infinitive form of a verb comprises of to and the verb itself (e.g., to laugh). It is a good idea to avoid putting any words between them. This is called a split infinitive, which lots of your readers will probably consider an error. (More on that below.)
Our mission: to boldly go where no man has gone before.
(The word boldly should not appear between to and go.)
You have to really mean it.
(The word really should not appear between to and mean.)
If rewording your sentence to avoid a split infinitive makes it sound too contrived, then just use the split infinitive. The split infinitive is not really an error at all. However, it is worth avoiding because there's a fair chance that lots of readers will think it is.)