Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.
A.when B.since C.before D.after
四个选项都表示时间,但根据主从句间的关系可以判断答案 为A。
② 注意when的特殊句型
下列句型中when连接的不是时间状语从句,但考试中却常与其它时间状语从句的连词一块出题。
were/was doing something when
were/was about to do something when
had just done something when
四级考题中不乏对上述结构的考查,如:
I had just started back for the house to change my clothes ___ I heard voices.
A.as B.when C.after D.while
I felt somewhat disappointed and was about to leave ___ something occurred which attracted my attention.
A.unless B.until C.when D.while
这类考题比较简单,只要同学们清楚这一句型,答案则自然可得。
③ 注意no sooner than .和hardly/scarcely when句中的时态。
④ 注意not until 中时间状语可以提前。如
____ quite recently, most mothers in Britain did not take paid work outside the home.
A.Before B.Until C.From D.Since
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