用become造句现在时和过去时
现在时：I want to become a writer．我想要成为一个作家。 过去时：I became a writer two years ago．我两年前成为了作家。! become的各种形式： 过去式: became 过去分词: become 现在分词: becoming become用作系动词时,意思是“成为,变得”,表示情况的开始、发展和结束的变化。后接名词、形容词(或其比较等级)、过去分词作表语,偶尔也可接带疑问词的动词不定式。 如： Maple leaves become...