Unfortunately, the reason is because it means different things in different situations. Here are a few common situations:
TO GET + direct object = to obtain, to receive, to buy:
- She got her driving license last week.
- They got permission to live in Switzerland.
- I got a letter from my friend in Nigeria.
- He gets $1,000 a year from his father.
- She got a new coat from Zara
- We got a new television for the sitting room.
- We got to London around 6 p.m.
- What time are we going to get to Álora?
- When did you get back from Vietnam?
- It’s getting colder.
- I’m getting sick to the back teeth of the rise in costs of electricity
- It gets dark very early in the winter.