"to also know how" and "like summer"
Here are some possible interpretations, depending on the context:
* "To also know how to do things like in summer" - This emphasizes knowing how to do something specific during the summer, like swimming, playing outside, or relaxing.
* "To also know how to be like summer" - This could refer to knowing how to be carefree, joyful, and relaxed, like the feeling of summer.
* "To also know how summer is" - This suggests understanding the nature of summer, its characteristics, and what it entails.
Without further context, it's hard to give a definitive translation.