题目内容
14．If my brother well in his exams，he'll go to Tsinghua University next September．（ ）| A． | did | B． | does | C． | is doing | D． | will do |
分析 如果我的哥哥在考试中表现出色，明年九月他将会去清华大学深造．
解答 答案：B 根据英语语法规则，我们知道，if引导的条件状语从句需遵循"主将从现"这一原则，因为 he'll go to Tsinghua University next September是主句，并且为将来时态，所以if引导从句要用一般现在时态表将来，又因为 my brother 为第三人称单数，所以用does．故选B．
点评 许多题目中关键词对于快速而准确地判定答案起着至关重要的作用．找到句中的关键词（如if），也就找到了解题的突破口，因此，在解题过程中我们可以利用找关键词的方法．
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