Präsens
What is happening now, habits, and plans: morgen fahre ich.
- es zieht sich zu
to cloud over
Strong verb, separable, reflexive, accusative, auxiliary haben.
Separable: zu
In a main clause, zu goes to the end: es zieht sich … zu. It stays joined in a subordinate clause (…, dass es sich zuzieht), in the participle zugezogen, and with zu: zuzuziehen.
es
This verb has no other subject than es.
Enough to talk about now, your plans, and what you did.
What is happening now, habits, and plans: morgen fahre ich.
The everyday past in speech: haben or sein plus the participle.