③The teacher is explaining what we were confused (confuse) about.

　　老师正在讲解我们原来混淆不清的问题。

　　[名师点津]　confuse为动词，confused与confusing均为形容词，但v.­ed形式表示人或物处于某种状态(尤指声音、表情、眼神等)，常修饰人；而v.­ing形式表示使人产生某种情感，常修饰物。我们还学过的类似的词有：

　　2．(教材P2)As Polly observed the passengers on the train, she had a feeling that she was being watched by a tall man in a dark overcoat.

　　当波莉观察地铁里的乘客时，她感觉她正被一个穿着深色大衣的高个子男人注视着。

　　observe vt.观察；注意到；评论；遵守；庆祝(节日)

　　observe sb.do ...　　　　 观察到某人做......

　　observe sb.doing ... 观察到某人正在做......

　　observe sb.done ... 观察到某人做......，观察到某人遭遇......

　　①Everyone should observe the law.

　　人人都应该守法。

　　②The police observed the man enter (enter) the bank.

　　警方监视到那名男子进入了银行。

　　③They were observed walking (walk) towards the supermarket.

　　有人发现他们正朝超市走去。

　　[语境串记]　When we observe festivals, we must observe the traffic regulations.

　　当我们庆祝节日的时候，我们必须遵守交通规则。

　　[名师点津]　observe sb./sth.do ...变为被动语态时需还原不定式符号to，即sb./sth.be observed to do ...。

　　3．(教材P2)While the rest of the passengers were getting out, she glanced at the faces around her.

　　趁其他乘客下车的时候，她扫视了一下她周围的那些面孔。

　　glance vi.& n．瞥一眼，匆匆看，扫视

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