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