to
"To" is one of the most frequently used words in English. It works in two main ways: as a preposition (connecting words and showing direction or purpose) and as part of the infinitive form of a verb. It also has a lesser-known use as an adverb. Here are the most important senses you need to know.
In English, when you use the base form of a verb after certain words, you put 'to' in front of it. This is called the infinitive. It is not really a meaning on its own — it is a grammatical tool that signals a verb is coming. For example: 'I want TO eat', 'She needs TO sleep', 'He loves TO read'.
grammar / everyday language · Modern, widely used