第90句：

Professor Johnson,last nigh when I was putting the finishing touches on my paper,a computer failure completely wiped out my files.Do you think I can have another day to retype it?

六級詞匯講解:
本句的句式結構較簡單，主要涉及when引導的時間狀語從句。
touch的意思是“(細節(jié)中的)微小之處”，put the finishing touches onlto sth.表示“對……做最后修改”。如:
The artist was putting the finishing touches on a piece of work.
那位藝術家正在對一件作品做最后的修改。
computer failure指“計算機故障”。wjpe out的意思是“擦掉;消滅”。如:
The attack is to wipe out data, to delete files, or to format the hard disk.
攻擊方式是消除數(shù)據(jù)、刪除文件或格式化硬盤。

六級考點歸納：
與put有關的短語在四、六級考試中經(jīng)常出現(xiàn)，較難理解的主要包括:
put through接通;完成或達成(計劃、方案等);使某人經(jīng)受(苦難、考驗等)
put acrosslover溝通或傳達(思想等);解釋清楚
put in正式提出某事物;呈交某事物