考点分析－－时间状语从句的省略句
安徽省蚌埠二中----朱正军
单句语法填空（省略句一）
1.1 The same holds true when _____ (shop) for wine books.
1.2. When ______(complete), the museum will be open to the public next year.
2.1. Whenever ____ (feel) down, I turn to my books for some inspiration and words of wisdom.
2.2. Fasten your seatbelt whenever ______ (seat), even when you are sleeping.
3.1. While _____ (study) at college, I knew a lot of foreign friends.
3.2. While _____ (lock) up in prison, she wrote her first novel.
答案与解析：
I．该组题考查的是省略句。在when, whenever,和while引导的状语从句中如果符合下列条件则可以使用省略句：1. 主从复合句的主语是一致的，或从句为it is necessary/possible的固定句型；2. 从句的谓语部分通常含有be动词。要省略的是从句的主语和谓语部分的be动词。
II．在语法填空题中，这类题目非常简单。只要给一个动词，我们就看看该动词与主句的主语之间是主动还是被动关系，如果是主动关系就用doing，如：1.1 shopping; 2.1. feeling; 3.1. studying，反之，如果两者之间是被动关系则用done，如1.2. completed; 2.2. seated; 3.2. locked。
III．在短文改错中，这类题目就更为简单了。错误往往有两类：一是doing和done之间的转换，如：When waited for a bus, he takes his turn.（该句中he与take之间明显是主动关系，所以把waited改成waiting。）Whenever knowing, such facts should be reported.（该句中facts与know之间是被动关系，所以将knowing改成known即可）二是这些连词后面用了being。这类题目只要将being去掉就行，不管后面是什么形式。如：The poor are rich when being satisfied.（去掉being即可）；I have learned to be flexible when being possible.（去掉being即可）。
