题目内容
19.-How long will it be _____ the professor makes another visit to China?-It all depends.( )
A. | until | B. | before | C. | since | D. | when |
分析 ---在教授来中国访问前还需多长时间?
---看情况而定.
解答 答案:B.根据选项until直到…,before在…前,since自从…,when当…时,再结合句意,在教授来中国访问前还需多长时间?可知此处缺少了一个引导时间状语从句的连接词,故B正确.句型It will be 段时间+before…可翻译为,还要多长时间才…
点评 本题考查时间状语从句的连接词,在充分分析句型再结合语义的基础上便能选出正确答案,同时要注意其他选项的意思,
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