spot sb. doing sth. 发现某人正在干某事

be spotted with 点缀着

☛The next morning I'd just about given myself up for lost when I was spotted by a ship. 第二天早上，我正感到绝望的时候，一艘船发现了我。

☛Someone spotted him leaving (leave) the building soon afterwards. 事后不久，有人发现他离开了那幢楼房。

☛The night sky is spotted with stars. 夜空繁星点点。

　◆(2) n. 斑点；污点；场所；地点。常见搭配：

on the spot 当场；在现场；到现场

☛His jacket was covered with spots of mud. 他的上衣满是泥点。

☛He showed me the exact spot where he had asked her to marry him. 他把他当时向她求婚的确切地点指给我看。

写出下列句中spot的含义

1. The police spotted a serious mistake in his action.

2. The policeman ran to the spot immediately.

3. I don't know the exact spot where it happened.

【答案】

1. 发现　 2. 现场　 3. 地点

3. account for

　◆是......的原因；解释。

☛He couldn't account for being absent from the meeting. 他无法对自己缺席会议作出解释。

【拓展延伸】

on account of由于，因为

on no account决不(置于句首时，句子用部分倒装)

take...into account/take account of顾及，考虑到；体谅

☛I was absent from school on account of illness. 我因病没去上学。

☛On no account should the soldiers be blamed for what happened. 士兵们绝对不该因所发生的事而受到责备。