No visitor or relative can enter the patient‘s room unless__
5个回答
答案毫无疑问是C
这里是一个省略结构,这个句子可以还原成这样
No visitor or relative can enter the patient’s room unless (they are invited) by the doctor
例如
1.“从句主语+be”的省略.这种类型的省略只限于某些以连词when,while,if,until,though,unless 等引导的状语从句,而且这些从句的主语必须和主句的主语相同;同时,从句的谓语动词又有动词be的某一形式;主语和be省略后,直接跟连词后的谓语部分可以是:
形 容 词:Apologize when necessary.
名词:Though a lawyer by training,he proved himself to be a good teacher.
代词:Errors,if any,should be corrected.
介词短语:While at college,he was a prominent ath?
现在分词:Look out for cars when crossing the street.
过去分词:Once exposed,they will be sentenced to death.
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