今天的天气变得很冷。
jīntiān de tiānqì biàndé hěn lěng 。
Today's weather has changed to be very cold.
我想变得更聪明。
wǒxiǎng biàndé gēng cōngmíng 。
I want to change to become smarter.
他变了很多,不再那么害羞了。
tā biàn le hěnduō , bùzài nàme hàixiū le 。
He has changed a lot and is no longer that shy.