We can use become, get, go and turn as a linking verb. These types of linking verbs connect the subject of the verb to an adjective, and describe changes.
- She hoped to become popular.
- I'm already starting to go bald.
- My work is getting better.
- The leaves are turning brown.
Become and get can be used to describe changes of emotional or physical state, or situation. We use become in formal cases.
- He wants to become/get involved in politics.
- She became/got pregnant after two months.
We use get with adjectives such as old, cold or dark to describe natural changes.
- It gets dark very early in the winter.
- We're all getting older every day.
Go is used especially to describe changes that are not desirable
- My grandfather is going deaf.
- He went blind in one eye.
- He went crazy, and started to scream.
- The milk has gone/turned sour.
- The bananas are starting to go rotten.
Turn can be also used with an adjective to mean 'become' or 'change into a different state or condition'.
- The weather is turning cold.
- He turned nasty when I refused to give him another loan.
We can use both turn and go to describe changes of .
I started to turn/go gray when I was thirty.
His face turned/went red with embarrassment.
She suddenly turned/went pale.