become的用法，怎么用

■become用作连系动词，意为成为，其后可接： 1. 名词 They became great friends. 他们成了莫逆之交。 He aims to become a computer expert. 他打算当一名电脑专家。 She has become a painter of distinction. 她成了一名杰出的画家。 2. 形容词 She beca