become后接形容词
become是系动词，后面接形容词作表语
所以用careful
become后接形容词
It becomes hot in summer.
在夏天天气变热。
Everything will become easy.
所有事情都会变得容易。
2、become后接名词
Tom will become a doctor.
汤姆将成为一位医生。
They became friends.
他们成为了朋友。
3、become后接作形容词用的过去分词
The classroom became crowded.
教室变得拥挤。
She became annoyed.
她生气了
