英語(yǔ)六級(jí)-完形語(yǔ)法關(guān)鍵句385. He could not plead ignorance as his excus

385. He could not plead ignorance as his excuse; he should have known what was happening in his department.

譯文　他不能以不知道做借口為自己辯護(hù)；他應(yīng)該知道在自己的部門里發(fā)生了什么事。

點(diǎn)睛　plead意為“辯護(hù)；懇求”。如：

He pleaded with his mother to allow him to go to the circus. 他請(qǐng)求母親答應(yīng)他去看馬戲。

ignorance意為“無(wú)知”。如：

I regret my ignorance on the subject. 我為自己對(duì)這個(gè)課題的無(wú)知感到遺憾。

第二個(gè)分句中的should have known即“should＋have＋過(guò)去分詞”結(jié)構(gòu)。should have done sth.表示“本應(yīng)做某事而沒(méi)有做”，shouldn't have done sth.表示“做了本不應(yīng)做的事”。如：

1) You should have come back earlier. 你本應(yīng)早點(diǎn)回來(lái)。（實(shí)際上沒(méi)早回來(lái)）

2) You shouldn't have gone there yourself. 你本不應(yīng)該自己去那里。（實(shí)際上自己去了）

考點(diǎn)歸納　excuse通常作名詞，意為“借口”，如在本句中。但是excuse也可以作動(dòng)詞，表示“為……找借口；原諒”。如：

She stood up, excused herself and walked out of the meeting. 她站起身來(lái)，為中途離開(kāi)致歉，然后走出會(huì)場(chǎng)。

Please excuse my bad handwriting. 請(qǐng)?jiān)?，我的字寫得不好?