Meaning of think in English
1. have a particular opinion about someone or something
What are you thinking about?
What do you think about it?
2. use one’s mind to form opinions and judgments, reach logical conclusions, deduce etc.
I took the job without thinking much.
Answer after thinking carefully.
Let me think.
3. believe that something is true, although you are not sure
I think she is still alive.
4. consider to be probably true; expect
I didn't think it would cost so much.
You were younger than I thought.