What does ‘IN(TO)’ really mean?

Learning objectives:

1. ‘The box’ of IN (& INTO) is not really just a ‘a box’: Knowing the relationships that IN (& INTO) express makes their phrasal verbs easy to understand.
2. IN (& INTO) has two basic senses: HOLDING (the box contains or controls the ball by limiting the balls movement), and INCLUDING (the box isn’t really a box, it’s a collective).
3. By starting with basic physical examples of these meanings, we can later see how English extends these meanings into more abstract contexts where the relationships of ‘LIMITING’ or ‘INCLUDING’ are still seen.
4. When we combine movement and these ‘LIMITING’ or ‘INCLUDING’ relationships: phrasal verbs begin to become obvious and easy to remember and use!