Make sure you have checked the information in the passage you make the choice．( )A．afterB．sinceC．whileD．before 题目和参考答案——青夏教育精英家教网——

题目内容

17．Make sure you have checked the information in the passage you make the choice．（　　）

A．

after

B．

since

C．

while

D．

before

分析在你做选择之前，要确保你已经核对了这一页上的信息．

解答答案：D．根据Make sure you have checked the information in the passage可知核对了这一页上的信息要发生在you make the choice（做选择）之前，所以答案是D before"在…之前"．其他选项的含义分别是A"在…之后"；B"自从"；C"当…时候，然而"．

点评考查从属连词．before的固定句型：
1．用于句型"it was not long+时间段+before …"意为"不久就…．"
It was not long before he sensed the danger of the position．
2．用于句型"it will be（not ）+时间段+before…．"表示"要过多久/不久…才…"
It will be half a year before you graduate from this school．
It will be not long before you find you are wrong．

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