Here is when to use "to" and "too," along with distinctions between them:
- "To" is a preposition or part of an infinitive verb form:
- It shows direction, place, or movement toward something (e.g., "I am going to the store").
- It introduces an infinitive verb (e.g., "I want to dance").
- "Too" is an adverb with these main uses:
- To mean "also" or "in addition" (e.g., "Me too," "She likes it too").
- To show excess or more than needed, often before adjectives or adverbs (e.g., "Too hot," "Too much").
- To emphasize a point, sometimes used at the end of a sentence for emphasis (e.g., "It's about time, too").
- It often carries a negative sense when indicating excess or not enough (e.g., "Too little time," "Too few seats").
In summary:
- Use "to" when indicating direction, place, or as part of an infinitive verb.
- Use "too" to mean "also" or to express an excessive degree of something.
Examples:
- "I want to go to the park." ("to" shows direction and infinitive)
- "She is too tired to continue." ("too" shows excess)
- "I want some cake, too." ("too" means also)