每日小纸条Day2冠词用法定冠词/an不定冠词thc零冠词（即名词前不加冠词）用于第一次提到的人或物前指上文已经提到的人或事物球类/棋类名词前如：This is an apple.如：play basketball/chess泛...

bad /baed/释义adj.worse,worst of low quality,or notacceptable劣质的，很差的；不可接受的例句The plumber did a bad job on the repairs.not (too)bad释义satisfactory令人满意的例句That's...