If someone or something becomes a particular thing, they start to change and develop into that thing, or start to develop the characteristics mentioned. 变成
verb [vi. 不及物动词]变得,变成,成为;适合,使显得漂亮
If something becomes someone, it makes them look attractive or it seems right for them. 适合; 与…相称
be- 构成动词,表示"使…成为";构成一些介词become vi. 变得(be+come来→变成,成为)